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mg/dL
instructions for use
Codefree
3 IN 1 BLOOD GLUCOSE MONITOR
step by step
GL50
GB
Beurer GmbH • Söfl inger Straße 218 • 89077 Ulm, Germany
www.beurer.com
germanlengineering
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Contents
1 Getting to know your instrument ................................................................................ 4
1.1 Delivery scope, replacements and accessories ..................................................................... 5
1.2 Functions of the device ..........................................................................................................6
1.3 Signs and symbols ................................................................................................................. 7
2 Warnings and safety notes ............................................................................................8
3 Description of units and accessories ..................................................................... 11
3.1 Blood glucose monitor ......................................................................................................... 11
3.2 Lancing device and lancet needles ...................................................................................... 12
3.3 USB cover ............................................................................................................................ 12
3.4 Display symbols ................................................................................................................... 12
3.5 Test strips ............................................................................................................................. 13
4 Initial use and basic settings ......................................................................................14
4.1 Removing the battery insulation strips, replacing the batteries ...........................................14
4.2 Making and changing basic settings ...................................................................................15
5 Taking measurements ....................................................................................................16
5.1 Preparing to take a blood sample ........................................................................................16
5.2 Preparing the lancing device for taking a sample ................................................................17
5.3 Taking a blood sample and measuring the glucose level .................................................... 19
5.4 Reading the result and labelling measurements ..................................................................21
5.5 Post-processing and disposal .............................................................................................22
5.6 Evaluating measured blood glucose values ......................................................................... 23
5.7 Functional check using control solution ..............................................................................25
6 Measurement memory ................................................................................................... 28
6.1 Displaying individual values ................................................................................................. 28
6.2 Displaying average blood glucose values ............................................................................ 29
6.3 Displaying average blood glucose values for labelled values .............................................. 29
6.4 Deleting individual measured values from the memory .......................................................31
6.5 Deleting all stored values .....................................................................................................31
6.6 Evaluating measured values on a PC .................................................................................. 31
7 Storing, maintaining and disinfecting the device .............................................32
7.1 Maintenance ........................................................................................................................ 32
7.2 Disinfection ..........................................................................................................................32
8 What if there are problems? ........................................................................................ 33
9 Technical specifications ................................................................................................ 35
10 Guarantee and customer service .............................................................................38
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1 GettinG to know your instrument
Dear customer,
Thank you for choosing one of our products. Our name stands for high-quality, thoroughly tested
products for applications in the areas of heat, weight, blood pressure, blood glucose measurement,
body temperature, pulse, gentle therapy, massage and air.
Please read these Instructions for use carefully and keep them for later use, be sure to make them
accessible to other users and observe the information they contain.
With kind regards,
Your Beurer team.
Getting to know your instrument
The GL50 blood glucose monitor is intended for fast and simple blood glucose measurement of fresh
capillary blood samples, either for self-testing or in a clinical environment by trained personnel.
It enables you to measure your blood glucose quickly and easily, store the measured values and display the average of all measured values, thereby providing optimum assistance for monitoring your
diabetes. The test is performed exclusively externally (IVD).
The backlit display shows measured values clearly. The user-friendly design with handy test strips
and the simple controls with just a small number of buttons guarantee simple, yet reliable measurements.
The device can be connected directly to a PC using the integrated USB connection. You can evaluate
the measured values on your PC using special software (in English and German) and use the results
to monitor your blood glucose values.
4 Beurer GL50 mg/dL
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1.1 Delivery scope, replacements and accessories
Check that the set packaging has not been tampered with and make sure that all contents are present. Before use, ensure that there is no visible damage to the device or accessories and that all
packaging material has been removed. If you have any doubts, do not use the device and contact
your retailer or the specified Customer Services address.
B C D
G
E
F
A “3 in 1” monitor: Lancing device, plug-in USB and monitor
B AST cap for taking blood samples from alternative parts of the body
C USB cover
D 10 test strips
E 10 sterile lancet needles
F 2 button cell batteries, 3 V CR2032 (already inserted)
G 1 practical case
These Instructions for use, additional information
•
The blood glucose monitor (A), test strips (D) and additionally available control solutions have been
specially designed to complement each other. For this reason, use only test strips (D) and control
solutions that have been approved for this blood glucose monitor (A).
Note
•
Use original manufacturer accessories only.
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Follow-up purchases
You can also obtain test strips, control solution and lancet needles without a prescription.
Item REF
50 test strips REF 464.15
Control solution LEVEL 3 and 4 REF 464.16
100 lancet needles REF 457.01
1.2 Functions of the device
This device is intended for measuring the blood glucose content in human blood. It is also suitable
for self-testing at home.
The blood glucose monitor enables you to quickly and simply:
•
Measure your blood glucose level
•
Display, label and save measured values
•
Display the average measured blood glucose value from the last 7, 14, 30 and 90 days
•
Display the average of the labelled measured blood glucose values from the last 7, 14, 30 and 90
days
•
Set the time and date
•
Evaluate the saved measured values on a PC using special software.
The blood glucose monitor also includes the following monitoring functions:
•
Warning in the event of unsuitable temperatures
•
Low battery display
•
Low test strips warning
Warning
•
Do not use the device to diagnose diabetes; it is intended for regular monitoring only.
•
Consult your GP with regard to insulin doses.
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1.3 Signs and symbols
The symbols on the packaging, type plate of the blood glucose monitor and accessories represent
the following:
In vitro diagnostics Manufacturer
Serial number
Temperature limit
+2°C to +30°C
Not for re-use/For single use
only
Please observe the Instructions
for use
PCT: certification symbol for
products that are exported to
the Russian Federation and
members of the CIS
Green dot (Der Grüne Punkt):
Use by
German dual waste collection
system
Maximum shelf life after
initial opening in months
Batch designation
Art.-Nr.
Sterilised by radiation (lancets)
Warning, see accompanying
documents
Contents sucient for <n> tests
/
Order number
Unit of measurement for blood
glucose value
Biohazard, risk of infection
In the Instructions for use, the symbols represent the following:
Warning
Warning instruction indicating a risk of injury or damage to your health/your patient’s health.
Important
Safety note indicating possible damage to the unit/accessory.
Note
Note on important information
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2 warninGs and safety notes
Risk of infection
All components of the blood glucose monitor and its accessories may come into contact
with human blood and are therefore a possible source of infections.
Warning
•
This blood glucose monitor must display the blood glucose content in mg/dL. The unit of meas-
urement mg/dL accompanies each blood glucose value. Please contact Customer Services if
the device does not display mg/dL. You risk damaging your health if you measure your blood
glucose value using a unit of measurement with which you are not familiar, misinterpret the
values and therefore take incorrect measures.
•
When using the blood glucose monitor for various persons, observe the generally applicable regula-
tions regarding disinfection, safety and contamination.
•
Medical carers and others who use this system on several patients must be aware that all products
or objects that come into contact with human blood must be handled, even after cleaning, as though
they could transfer pathogens.
•
The lancing device is suitable for self-testing. Do not share the lancing device or lancet needles with
others or amongst various patients (risk of infection!).
•
Use a new, sterile lancet needle for each blood sample (for single use only).
General notes
Warning
Do not use the device in the vicinity of strong electromagnetic fields and keep it away from radio
systems or mobile telephones.
Measuring the blood glucose content
Warning
•
The measurements taken by you are for your information only – they are no substitute for a medical
examination! Consult your GP regularly regarding your measured values. Do not alter the procedures
prescribed by your GP.
•
The Beurer GL50 monitor provides a simple way of monitoring your own blood glucose levels, how-
ever, you may need to obtain information on how to use the system from your healthcare professional (for example, your GP, chemist or diabetes consultant). Only proper use will guarantee precise
measurements.
•
A lack of water, high fluid loss, for example perspiration, frequent passing of water, severe hypoten-
sion (low blood pressure), shock or hyperosmolar hyperglycaemic non-ketotic coma (HHNKC) may
lead to incorrect measured results.
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•
An excessively high or low hematocrit value (proportion of red blood cells) may lead to incorrect
measurements. In the event of a very high hematocrit value (above 55%), the displayed blood glucose value may be too low; in the event of a very low hematocrit value (below 30%), it may be too
high. Consult your GP if you do not know your hematocrit value.
•
Do not use the test strips to measure blood glucose values on newborns.
•
Do not use NaF or potassium oxalate anticoagulants to prepare for venous blood samples.
•
Do not test any severely ill patients using this device.
•
Lipemia eects: High blood triglyceride values of up to 1000 mg/dL have minimum influence on the
results. However, triglyceride values above this level may aect the blood glucose test.
•
High blood cholesterol values of up to 500 mg/dL have minimum influence on the results. However,
cholesterol values above this level may aect the blood glucose test.
•
Use fresh capillary whole blood only. Do not use serum or plasma.
•
Use capillary blood without squeezing the penetration area. If the area is squeezed, the blood is di-
luted with tissue fluid and this may lead to an incorrect result.
•
Do not use the test strips above an altitude of 7010 m.
•
Very high levels of humidity may influence the test results. Relative humidity of more than 90% may
lead to inexact results.
Note
T
he Beurer GL50 mg/dL measuring system is intended for measuring capillary whole blood.
Storage and maintenance
Warning
•
Store the blood glucose monitor and its accessories out of reach of small children and pets. Small
parts, such as lancet needles, batteries or test strips may be life-threatening when swallowed. If
swallowed, seek medical attention immediately.
•
The test strip box contains desiccant, which may irritate the skin or eyes when inhaled or swallowed.
Keep the box out of the reach of children.
The blood glucose monitor is made from precision and electronic components. The accuracy of the
measurements and service life of the device depend on its careful handling:
•
Protect the device and its accessories from impacts, humidity, dirt, marked temperature fluctuations
and direct sunlight. Do not store the device, test strips and control solution in your vehicle, in the
bathroom or in a cooling appliance.
•
Do not drop the device.
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Batteries/Saving measured values
Warning
• Keep batteries out of reach of children. Children may put batteries in their mouth and swallow them.
This may severely damage their health. In such cases, seek medical assistance immediately!
•
Normal batteries must not be charged, heated or thrown into an open fire (risk of explosion!).
Important
•
Batteries must not be taken apart or short circuited.
• Always replace all batteries at the same time and use batteries of the same type.
•
Leaking batteries may damage the device. If you do not intend to use the device for longer periods,
remove the batteries from the battery compartment.
Attention!
•
Leaking or damaged batteries may burn the skin therefore use suitable protective gloves if this is
the case.
Note
•
The stored blood glucose values are retained when the batteries are replaced. If applicable, the date
and time must be reset after replacing the batteries.
•
Use lithium-ion batteries only.
Repairs
Note
•
Do not open the device. Failure to comply will result in voiding of the warranty.
•
Do not repair the device. Proper operation can no longer be guaranteed in this case.
•
Please contact Customer Services for repairs.
Disposal
Warning
• It is essential to comply with the generally applicable safety precautions for handling blood when dis-
posing of materials from the blood glucose monitor. Dispose of all blood samples and materials with
which you or your patients come into contact correctly in order to prevent injury and infection of other
persons.
•
After use, dispose of test strips and lancets in a puncture-proof container.
Note
Batteries must not be disposed of with household waste. As a consumer, you are required by law to
recycle used batteries. You can recycle your old batteries at public collection points in your community
or wherever batteries of the relevant type are sold.
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The codes below are printed on batteries containing harmful substances:
•
Pb = Battery contains lead,
•
Cd = Battery contains cadmium,
•
Hg = Battery contains mercury.
For environmental reasons, do not dispose of the device in the household waste at the end
of its useful life. Please dispose of the unit in accordance with EC Directive 2002/96/EC –
WEEE (Waste Electrical and Electronic Equipment). If you have any questions, please contact the local authorities responsible for waste disposal.
3 description of units and accessories
3.1 Blood glucose monitor
An overview of the monitor
1 Lancing device
2 Plug-in USB
3 Monitor
Front Rear
1 ON/OFF button
2 Display
3 Rocker switch
4 Slot for test strips
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1 Clip
2 Battery cover
3 Clip (removable)
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3.2 Lancing device and lancet needles
1 AST cap (transparent)
2 Cap
3 Protective lancet disc
4 Sterile lancet needles
5 Lancet holder
6 Dial for setting
dierent penetration depths
7 Tensioning slider
8 Trigger
3.3 USB cover
If you would like to use the blood glucose monitor
without the integrated lancing device, you can use
the supplied USB cover in place of the lancing
device.
3.4 Display symbols
1 Speaker symbol
2 Temperature symbol
3 Replace battery symbol
4 Time
5 Date
6 Measured value display, HI, LO display,
average blood glucose value, ERR, USB
Note
To read the measured values correctly, the underline must be below the measured values.
Note
The blood glucose monitor is supplied with the following basic settings:
•
Blood glucose unit: mg/dL
•
Acoustic signal on
•
Backlighting on
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7 Symbols for labelling measurements
8 Memory symbol
9 Test strip and blood droplet symbol
10 Blood glucose unit mg/dL
11 Blood glucose unit mmol/L –
not functional
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3.5 Test strips
Front Rear
1 Gap for blood input
2 Handle
3 Contacts
Insert the test strip into the device so
that the contacts are pointing inside
the slot.
Make sure that the front of the test
strip is facing you.
Note
Read carefully the following information on handling and storing your test strips. The test strips will
only provide accurate measured results if all notes are followed.
Warning
Use each test strip only once and for one patient only!
Handling test strips
Note
•
Securely close the test strip box immediately after taking out a test strip.
•
Do not use the test strips if they have expired. The use of expired test strips may lead to incorrect
measurements. The expiry date is printed on the box next to the hourglass symbol .
You can identify the rear by the contact tracks.
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•
Test strips expire three months after the box is opened. Make a note of the expiry date (opening date
+ 3 months ) on the label. The shelf life is limited to the expiry date (see date next to the hourglass
symbol ).
• Discontinue use of the test strips if one of the two expiry dates has passed ( / ).
•
You can touch any part of the test strip with clean, dry hands.
•
Use the test strip for measurement immediately after removing it from the box.
•
Do not bend, cut or otherwise modify the test strips.
•
Do not use test strips that have come into contact with fluids.
Storing test strips
Note
•
Keep the test strips in a cool, dry place above +2°C and below +30°C. Do not expose the test strips
to direct sunlight or heat. Do not store in your vehicle, in the bathroom or in a cooling appliance.
•
Permitted relative air humidity below 90%.
•
Keep the test strips in the original box only – never use other containers.
4 initial use and basic settinGs
4.1 Removing the battery insulation strips, replacing the batteries
Note
•
Two batteries are included with the
blood glucose monitor. These have
already been inserted into the battery
compartment.
•
Remove the insulation strip before initial
use.
Carefully pull the lancing device and monitor apart. Then detach the removable clip.
1
Remove the battery compartment lid on the underside of the device. To do so, slide the cover
2
in the direction of the imprinted arrow.
When replacing the batteries, remove all batteries. The de-
3
vice retains the date and time as long as one battery is still
inserted. If applicable, reset the date and time (see “4.2 Making and changing basic settings” on page 15).
CR2032
CR2032
Insert two new CR 2032 3 V batteries. Make sure that the batteries are inserted the correct
4
way round. See the graphic in the battery compartment.
Close the battery compartment lid again carefully.
5
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Reattach the clip to the rear of the monitor. Fit the lancing device and monitor back together.
6
Note
•
If the replace battery symbol appears, it means that the batteries are almost empty. Replace
both batteries as soon as possible.
•
If “ ” appears on the display, the battery power level is so low that no more measurements can be
taken.
4.2 Making and changing basic settings
Remove the batteries and reinsert them. Alternatively, hold down the “+” but-
1
ton and the ON/OFF button for a minimum of five seconds.
An acoustic signal sounds.
The year display flashes.
Setting the date and time
2
Note
•
You must set the date and time. Otherwise, you will not be able to save your measured values
correctly with a date and time and access them again later.
• The time is displayed in the 24-hour format.
Set the year (calendar to 2099) by pressing the “+” or “–” button. Confirm by pressing the ON/
OFF button.
The day display flashes.
Proceed as described above for the month, day, hour and minute.
“ ” and “ ” are displayed. The background of the display is simultaneously illuminated
for a few seconds.
Switch backlighting on/o
3
To switch the blue backlighting o, press the “+” or “–” button.
“ ” and “ ” are displayed. Confirm by pressing the ON/OFF button.
“ ”, “ ” and the speaker symbol are displayed.
Switching the acoustic signal on/o
4
To switch the acoustic signal o, press the
“ ” and “ ” are displayed.
The speaker symbol is no longer shown in the display.
Confirm by pressing the ON/OFF button.
“ ” and “Mem” are displayed.
“+” or “–”
button.
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Deleting stored values
5
Proceed as follows to delete stored values:
•
Press the “+” or “–” button. “Mem” and “ ” are displayed
•
Confirm by pressing the ON/OFF button. “Mem” and “ ” flash in the display.
•
To irreversibly delete your values, press the ON/OFF button again to confirm. “Mem”, “ ”
and “ ” are displayed.
If you do not wish to delete your values, press the
played again. Confirm by pressing the ON/OFF button.
The blood glucose monitor is now ready for use.
6
“+” or “–”
button.
“Mem”
and
“ ”
are dis-
5 takinG measurements
Warning
• Iftheprotectivedisconalancetneedlehasalreadybeenremoved,donotusethelancetneedle.
• Ifyoudropthelancingdevicewithaninsertedlancetneedle,carefullypickitupanddisposeof
the lancet.
Important
•
Use the lancing device only with lancet needles from the same manufacturer. Using other lancet
needles may prevent the lancing device from working properly.
•
If you are using a third-party lancing device, please read the accompanying Instructions for use.
5.1 Preparing to take a blood sample
Choose a part of the body from which to take a blood sample
1
The lancing device is intended for taking blood samples from the fingertip or other body parts
such as the palm of the hand, forearm or upper arm. We recommend taking blood samples
from the fingertip. To make the procedure as painless as possible, do not take samples directly
from the centre of the fingertip, but slightly to either side.
Warning
•
In the event of suspected hypoglycaemia: take blood from the fingertip only. Reason:
changes to blood glucose levels can be detected quickly in blood samples taken from the
fingertip.
•
Blood samples from the fingertip and samples taken from another body part (AST) may pro-
duce completely dierent results. It is essential to seek medical advice before taking measurements from other body parts.
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Prepare all parts
2
Prepare the following items: GL50 monitor (A), test strip box (D) and sterile lancet needles (E).
You will also need the AST cap for measurements on other parts of the body (B).
Wash your hands
3
Wash your hands with soap and warm water before taking a blood sample. This not only ensures optimal hygiene but also encourages good blood circulation at the puncture area on the
finger. Dry your hands carefully. Also ensure that the puncture area is hygienically clean when
taking blood samples from other body parts (AST).
Warning
If you have used alcohol for cleaning, ensure that the area has fully dried prior to measuring.
5.2 Preparing the lancing device for taking a sample
Remove cap
1
First bend the clip backwards.
Hold the monitor by the lancing device cover in one hand. With your
other hand, remove the cap from the lancing device.
Insert lancet needle
2
Insert a sterile lancet needle into the lancing device.
Push firmly on the lancet until it audibly engages and it cannot be
pushed further into the holder.
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Remove the protective lancet disc
3
Remove the protective lancet disc by turning clockwise. Retain the
protective disc for the safe disposal of the used lancet needle after
taking a blood sample.
Select cap and attach.
4
You need to use a dierent cap depending on the area from which you
take the sample:
- Fingertip: Cap (black)
- Other body parts: AST cap (transparent)
Warning
Do not use the AST cap to take blood samples from the finger.
Place the selected cap on the lancing device. Make sure that the curved
part of the cap fits on the curved part of the lancing device. Press firmly
on the cap until it audibly engages.
Select the penetration depth
5
You can set seven dierent penetration depths on the lancing device
using the dial with raised bars. The length of the bar represents the required penetration depth.
• 1 to 2: soft or thin skin
• 3 to 5: normal skin
• 6 to 7: thick or callous skin
Turn the dial until the required bar is in the centre of the black marking.
Tension the lancing device
6
Pull the slider in the direction of the arrow (to the right in the image) until it stops and then release. The slider automatically springs back into
position. The lancing device is now tensioned.
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5.3 Taking a blood sample and measuring the glucose level
Warning
• Change the puncture area each time you take a measurement, e.g. use a dierent finger or the other
hand. Repeatedly using the same area may cause inflammation or scarring.
• If the cap is not in place, there is a risk of injury from the exposed lancet.
• Do not squeeze your finger to obtain a larger drop of blood. If squeezed, the blood is diluted with
tissue fluid and this may lead to an incorrect result.
• Please note that insucient blood circulation at the puncture area, e.g. caused by cold temperatures
or illness, can lead to incorrect results.
Important
Do not apply any blood samples or control solutions to the test strip before inserting it in the monitor.
Prepare the test strip
1
Take a test strip from the box and immediately close it again. Use the test strip within three
minutes of removing it from the box.
Insert test strip
2
Take the monitor in your left hand. Hold the blood glucose monitor so that the display is facing you and the
Beurer logo is on the right-hand side.
Insert the test strip into the slot on the rear end of the
blood glucose monitor with the contacts first. Make
sure that the front of the test strip is facing you. You can
touch any part of the test strip with clean, dry hands.
The device switches on automatically
3
The device switches on automatically and briefly
shows the full display. The device is ready for use as
soon as the test strip symbol and the flashing blood
droplet symbol are displayed.
Warning
If segments are missing, stop using the device and immediately contact customer services. To
test whether the full display is completely displayed, pull the test strip out of the device and
hold the On/O button when subsequently switching on the device.
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Lancing to take a blood sample
4
The lancing device can now be used to take a blood sample. Make
sure that the blood remains as a droplet and is not spread.
- Blood sample from the fingertip
Firmly position the lancing device slightly to the side of the centre of
the fingertip. Press the trigger. Remove the lancing device from the
finger. A round drop of blood of at least 0.6 microlitres (corresponds
to approx. 1.4 mm, original size:
- Blood sample from other body parts (AST)
Find a soft area away from any bones, without any visible blood vessels and with as little hair as possible. Warm the penetration area to
enhance circulation by gently massaging the area. Press and hold the
lancing device against the penetration area for a few seconds and
then press the trigger. Continue to hold the lancing device against the
skin until a round drop of blood has formed under the cap. Maintain
the pressure until the drop of blood reaches a size of at least 0.6 microlitres (corresponds to approx. 1.4 mm, original size: ). Carefully
remove the lancing device from the skin.
Note
Only take blood from other areas of the body at the following
times:
•
On an empty stomach (more than two hours after most recent
meal).
•
At least two hours after administration of insulin.
•
At least two hours after physical activity.
P
lease also note the following:
•
If the blood glucose test results do not match how you feel, carry out another test using blood
from your fingertip.
•
DO NOT change your treatment purely on the basis of a measurement that was carried out
using blood taken from an alternative area. Carry out another test with blood from your fingertip in order to confirm the test result.
•
If you often fail to notice that you have a low blood glucose level, carry out a test using blood
from your fingertip.
If necessary, repeat the process
5
If you do not obtain sucient blood, repeat the lancing process with a greater penetration
depth in a dierent area.
) must have formed.
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Apply blood to the test strip
OK
6
Turn the monitor by 180°. Hold the blood input gap (at the tip of
the test strip) to the drops of blood until the gap is completely filled
and the monitor in the display starts counting backwards.
Do not press the penetration area (fingertip or other body parts) to
the test strip. The blood must not be spread. The blood is sucked
into the gap.
Note
Error message “Err002” appears on the display if the gap was
not correctly and suciently filled with blood. Repeat the measurement using a new test strip and a greater penetration depth.
Note
•
Do not add blood later if the device does not start measurement. Remove the test strip and end
this test. Use a new test strip.
•
If the test strip has already been inserted into the device but no blood is added to the test strip
within two minutes, the device switches itself o. Briefly remove the test strip and reinsert it so that
the device automatically switches itself back on.
•
Contact Customer Services if you are unable to cover the test strip in blood correctly.
5.4 Reading the result and labelling measurements
Read the result
Hold the blood glucose monitor so that the display is
facing you (Beurer logo on the right-hand side). As soon
as the blood input gap is filled with sucient blood,
the device performs the blood glucose measurement.
The blood glucose monitor counts down for approx.
five seconds. The measured result is then shown on
the display.
Read your measured value. Check again that you have read the result correctly. The underline must
be below the measured value, otherwise you need to turn the monitor by 180°. For explanations of
and measures regarding the measured values, see “5.6 Evaluating measured blood glucose values” on page 23. If an error message is displayed, read chapter “8. What if there are problems?”
on page 33.
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Label measured value
You have the following options for labelling measured values.
Before a meal
After a meal
General label (e.g. after exercising)
Labelling measured values enables you, your GP or diabetes consultant to better monitor your blood
glucose values. For example, you can display the average values of all measurements taken before
a meal.
To label a measurement, proceed as follows:
The measured value can be labelled as soon as it is displayed. Once the value disappears from
1
the display, it can no longer be labelled.
Press the “–” rocker switch repeatedly.
2
•
Pressing once, adds the label “Before a meal”.
•
Pressing again, adds the label “After a meal”.
•
Pressing a third time, adds the label “General label”.
•
Pressing a fourth time removes the label.
The selected label is stored in the memory of the device when it is switched o.
3
5.5. Post-processing and disposal
Remove test strip
1
Remove the test strip from the device and carefully dispose of it in accordance with the applicable regulations to avoid infecting others.
Remove cap
2
Carefully remove the cap from the lancing device.
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Stick protective disc on needle
3
Place the retained protective disc flat on a hard surface. Stick the tip
of the needle into the protective disc (image 1) so the needle is covered (image 2).
Image 1 Image 2
Remove and dispose of lancet needle
4
Press the trigger again so that you can grip the shaft. Carefully remove
the lancet needle from the lancing device and dispose of the lancet in
a puncture-proof container.
Carefully dispose of all blood samples and materials that you have come
into contact with. This prevents injuries and the infection of others.
Replace cap
5
Place the cap back on the device. Turn the clip back over the cap.
5.6 Evaluating measured blood glucose values
Your blood glucose monitor can process values between 20 and 630 mg/dL. The “Lo” warning is
displayed for measured results below 20 mg/dL. The “ ” warning is displayed for measured results
above 630 mg/dL.
Warning
•
If you suspect that the blood glucose results are incorrect, first repeat the test and, if applicable,
perform a functional test using control solution. Seek medical advice if dubious results persist.
•
Seek medical attention immediately if your symptoms do not correspond to your measured blood
glucose values and you have followed all instructions for the Beurer GL50 blood glucose monitor.
•
Do not ignore symptoms of too high/low blood glucose levels. Always seek medical attention!
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Blood glucose
The following table provides a classification of blood glucose values according to the diabetes guidelines of the German Diabetes Association (Deutsche Diabetes Gesellschaft – DDG).
Time of blood glucose
measurement
Normal
blood glucose
Suspicion
of diabetes
Diabetes
values
On an empty stomach
•
Whole blood, capillary
(haemolysed)
•
Plasma venous Below 100 mg/dL 100 – 125 mg/dL ≥ 126 mg/dL
Below 90 mg/dL 90 – 109 mg/dL ≥ 110 mg/dL
Two hours after a meal Below 140 mg/dL 140 – 199 mg/dL ≥ 200 mg/dL
Source: German Diabetes Association (Deutsche Diabetes Gesellschaft – DDG) 2009
Critical blood glucose values
Display Blood glucose Actions
Very low blood glucose level
Seek medical attention immediately.
Below 20 mg/dL
Low blood glucose level
Have a suitable snack. Follow your
GP’s instructions.
Below 70 mg/dL
High blood glucose level
If this high value persists two hours
after your last meal, this may indi-
•
On empty stomach, over
mg/dL
100
•
Two hours after a meal, over
cate hyperglycaemia. Seek medical attention to coordinate any
measures, if applicable.
140 mg/dL
High blood glucose level,
possibly ketones
Perform a ketone test. For this purpose, seek medical attention.
Above 240 mg/dL
Very high blood glucose level
Take another measurement using a
new test strip. If the display is the
Above 630 mg/dL
same as before: seek medical attention immediately.
24 Beurer GL50 mg/dL
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5.7 Functional check using control solution
The control solution is used to test the entire blood glucose monitoring system. This helps to determine whether the monitor and the test strips are working optimally together and whether the test is
being performed correctly.
Perform the control solution test if you suspect that the blood glucose monitor and/or the test strips
could be faulty or if you have repeatedly measured unusual blood glucose values. Also test the blood
glucose monitor if it has been dropped or is damaged. The control solution is available separately.
Please observe the additional notes in the instructions for using the control solution for the test.
Important
•
Do not use third-party control solution. Correct functioning of your monitor can only be tested using
Beurer LEVEL3 + LEVEL4 control solutions.
•
Control solution measurements: When using the device, specialist personnel must follow statutory
guidelines.
•
Do not apply any blood samples or control solutions to the test strip before inserting it in the moni-
tor.
Performing a functional test using control solution
Warning
To obtain correct results, the monitor, test strip and control solution must be the same temperature.
For the “Functional test using control solution”, the temperature is to be between 20 °C and 26 °C.
Insert test strip
1
Hold the blood glucose monitor so that the display is facing you. Insert a test strip into the slot
on the blood glucose monitor with the contacts first. Make sure that the front of the test strip
is facing you (see 3.4 “Test strips” on page 13 ).
Wait until the device is ready for use
2
The device automatically switches on and briefly shows the initial display. The device is ready for
use as soon as the test strip symbol and the flashing blood droplet symbol are displayed.
IMPORTANT: Control solutions and blood react to temperature influences in dierent ways.
It is therefore of vital importance that control solution measurement is always performed in
control solution mode. If this mode is not used, results may be obtained that are outside the
target range.
Activate control mode
3
Press the rocker switch (“+” or “–”) to change to control mode. “
In control mode, the measured value is not saved, meaning your statistics will not be aected.
However, if you do want to save the control measurement in the memory, press the rocker
switch (“+” or “–”) again. “ ” disappears from the display.
” is shown on the display.
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Drip control solution on surface
4
Choose a clean surface to carry out the
functional test correctly. Shake the control solution well before use. Undo the
cap and press two drops next to each
other on the clean surface without touching them. Use the second drop for the
measurement.
Note
Never apply the control solution straight from the bottle to a test strip. Reason: The remaining solution in the bottle will be contaminated if the top of the bottle comes into contact with
the test strip.
Apply drop to the test strip
5
Hold the input gap (at the tip of the test strip) to the drop of control solution until the gap
is completely filled. When the gap is suciently filled with solution, the device performs a
measurement. The device counts down for approx. five seconds. The measured result is then
shown on the display.
Evaluate result of functional test
6
Check whether the result is within the specified range of results for the control solution. This
range of results is printed on the test strip box.
Expected results
At room temperature, the measured values from the test using the control solution should be within
the range printed on the test strip box in approx. 95% of all tests.
Warning
The result range printed on the test strip box applies only to the control solution. This is not a recommended value for your blood glucose level.
26 Beurer GL50 mg/dL
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If measured values are outside the specified range, check the following possible causes:
Cause Action
•
The first drop of control solution was not dis-
posed of.
•
The tip of the bottle was not cleaned correct-
ly.
•
The bottle was not shaken well enough.
Control solution or test strip is contaminated.
The control solution, test strip or blood glucose
monitor is too warm or too cold.
The test strips and control solution were kept at
a temperature and humidity outside the specified range.
Damaged test strips. Possible causes include
•
Test strips were exposed to fresh air for too
long.
•
Test strip box was not closed completely.
Test strip or control solution has expired.
Functional test using control solution was performed incorrectly.
Problem with the blood glucose monitor Contact Customer Services.
Warning
If you repeatedly obtain measured values outside the specified range when using control solution, discontinue using the system to measure your blood glucose level. Contact Customer Services.
Rectify the cause and repeat the test.
Repeat the test using a new bottle of control
solution and/or new test strip.
Bring the control solution, test strips and blood
glucose monitor to room temperature (+20°C to
+26°C) and repeat the test.
Repeat the test using new, correctly stored accessories (test strips and control solution).
Repeat the test using a new test strip and/or a
new box of correctly stored test strips.
Repeat the test using a new bottle of control solution and/or new test strip from a new box.
Repeat the test and follow the instructions.
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6 measurement memory
For each measurement, your blood glucose value is automatically saved with the date and time unless “ ” was activated for a blood glucose measurement using control solution.
The memory can store a maximum of 480 measured values. If the memory is full, the oldest value is
replaced by the most recent value. You can call up every individual measured blood glucose value.
You can also calculate and display the average value for the last 7, 14, 30 and 90 days.
Note
•
If you have already saved measured values and you reset the date, the average values are calculated
as from the new period.
•
“---” indicates an empty memory for measured values. Press the ON/OFF button to switch o the
device.
6.1 Displaying individual values
The individual values from the last 480 measurements are displayed. The most recent measured
value is displayed first, and the oldest last. The date and time are also displayed on the monitor at
the same time.
Switch the monitor on using the on/o button [1]. The initial display is shown briefly. Press
1
the “+” or “–” rocker switch [3].
“
Mem
2
3
4
” and the number of saved blood glucose tests are displayed briefly (Image 1). The
display then changes to the most recent saved value including the measurement unit, date,
time, “
Mem
” and any label (Image 2).
Image 1 Image 2
Each time you press the rocker switch “–” again, first the memory space number will be
displayed and then the relevant measured value. You can display a maximum of 480 previous measurements.
You can cancel the process at any time. To do so, press the ON/OFF button or wait until
the device switches itself o automatically after two minutes.
28 Beurer GL50 mg/dL
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6.2 Displaying average blood glucose values
You can display the average measured blood glucose value from the last 7, 14, 30 and 90 days.
Switch the monitor on using the on/o button [1]. The initial display is shown briefly. Press
1
the “+” rocker switch twice [3].
The measurement unit of the blood glucose value, “ ” and the average value are displayed
(this means: 07 = 7, d = days).
Press “+” repeatedly to display the average value for 7, 14, 30 and 90 days.
2
You can cancel the process at any time. To do so, press the ON/OFF button or wait until the
3
device switches itself o automatically after two minutes.
1 Number of days, e.g. 7, for which the average value is calculated
2 Number of saved values used to calculate the average, e.g. 8
3 Average value
6.3 Displaying average blood glucose values for labelled values
You can display the average measured blood glucose value for labelled values from the last 7, 14,
30 and 90 days.
Switch the monitor on using the on/o button [1]. The initial display is shown briefly. Press
1
the “+” rocker switch twice [3].
The measurement unit of the blood glucose value, “ ” and the average of all measured
values are displayed (this means: 07 = 7, d = days).
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Press “+” repeatedly to display the average value of all measured values for 14, 30 and 90
2
days.
After the average of all measured values for 90 days is displayed,
•
the seven-day average for values measured “before a meal”
•
the symbol
• the unit of measurement for blood glucose values and
•
“ ”
are shown on the display.
Press “+” repeatedly to display the average blood glucose level from the last 14, 30 and 90
days taken "before a meal"
After the average value for 90 days taken “before a
•
the seven-day average for values measured “after a meal”
•
the symbol
• the unit of measurement for blood glucose values and
•
“ ”
are shown on the display.
Press “+” repeatedly to display the average blood glucose level from the last 14, 30 and 90
days taken “after a meal”
After the average value for 90 days taken “after a meal”
• the average for the last seven days of values labelled as “general”
•
the symbol
• the unit of measurement for blood glucose values and
•
“ ”
are shown on the display.
.
meal” is displayed,
.
is displayed,
Press “+” repeatedly to display the average blood glucose level from the last 14, 30 and 90
days for values labelled as “general”
You can cancel the process at any time. To do so, press the ON/OFF button or wait until the
3
device switches itself o automatically after two minutes.
30 Beurer GL50 mg/dL
.
Page 31
6.4 Deleting individual measured values from the memory
Press the buttons as described in “6.1 Displaying individual values” on page 28 until the value
1
that you would like to delete is displayed.
Press and hold the ON/OFF button. Also press the “–” button for two seconds.
2
“ ”, “
Mem
Press the ON/OFF button again. “ ”, the number of the value to be deleted, “
“ ” are displayed.
If you do not wish to delete the value, briefly press the “+” or “–” button. You are taken back
to the memory area.
The device then indicates that the subsequent measured value has moved to the memory
3
space of the deleted measured value.
” and the number of the value to be deleted flash.
Mem
” and
6.5 Deleting all stored values
Proceed as described in “4.2 Making and changing basic settings” under the section entitled “Deleting stored values” on page 16.
6.6 Evaluating measured values on a PC
The GL50 monitor features an integrated plug-in USB stick. The blood glucose evaluation software
GlucoMemory is installed on the USB stick (for position of the USB connection, see page 11). The
GL50 is compatible with Diabass and SiDiary.
The blood glucose evaluation software GlucoMemory is pre-installed on the monitor’s USB stick. You
do not need to install the software locally on a PC. This software enables you to evaluate your measured values, add insulin doses and print or export your results as a PDF or CSV file. The software helps
you and your GP to better monitor your blood glucose level.
For more information, please read software manual for the GlucoMemory software. Including all the necessary information and a detailed description of how to use the software (in English and German).
Note
•
An eective evaluation is only possible if you have set the date and time correctly (see “Setting the
date and time” on page 15).
•
Measurements cannot be taken while the USB stick is connected to a PC.
•
The measurements remain saved on the blood glucose monitor when the USB stick is removed from
the PC.
•
It is not possible to save software entries on the USB stick; Values are read only.
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Evaluating measured values on the PC
The blood glucose monitor must be switched o.
1
Insert the monitor’s USB connector into a free USB
port on your PC. In the event that the measuring
device is not recognised, please try using another
active USB point.
“ ” is shown on the display of the blood glucose
2
monitor. Saved data can now be viewed on your PC.
See the information on evaluating values in the software manual.
3
7 storinG, maintaininG and disinfectinG the device
Storing
Keep the Beurer GL50 blood glucose monitor in the case supplied after each measurement
not expose it to direct sunlight
Note
•
Do not store the device, test strips and control solution in your vehicle, in the bathroom or in a cool-
ing appliance.
•
Retain these Instructions for use.
•
Remove the batteries if you do not intend to use the device for a prolonged period of time.
•
Only clean the device when it is switched o.
.
7.1 Maintenance
Clean the surface of the device using a soft, slightly damp cloth (water or a mild cleaning solution).
Dry the device using a lint-free cloth.
Make sure that moisture does not enter the test strip insertion slot. Do not spray cleaning agent directly on the device. Do not submerge the device in water or any other fluids and make sure that no
fluids can enter the device.
7.2 Disinfection
Please comply with the generally applicable guidelines on disinfection when using the device on different persons. Do not submerge the device in disinfection solutions or any other fluids and make
sure that no fluids can enter the device.
and do
The cap on the integrated lancing device can be disinfected with 70 – 75% alcohol. Disinfect the
cap at least once a week and submerge the cap in alcohol for approx. 10 minutes. Allow the cap
to air dry.
32 Beurer GL50 mg/dL
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Note
The blood glucose monitor is made of precision components. The accuracy of the measurements
and service life of the device depend on its careful handling:
•
Protect the device from impacts and do not drop it.
•
Protect the device from damaging factors such as moisture, dirt, dust, blood, control solution or
water, marked temperature fluctuations, direct sunlight and extreme cold.
•
Do not use the device in the vicinity of strong electromagnetic fields, radio systems or mobile
telephones.
8 what if there are problems?
Display messages on batteries and blood glucose measurement
No. Cause Solution
LP Batteries empty. Replace all batteries.
Ht
Lt
Err
Err 001 System error.
Err 002 Insucient blood on the test strip.
Err 005 System error.
Temperature of the measuring environment, blood glucose monitor or
test strip above the permitted range.
Temperature of the measuring environment, blood glucose monitor or
test strip below the permitted range.
Used or contaminated test strip inserted.
Unknown error messages.
Repeat the test using a new test strip as soon
as the measuring environment, blood glucose
monitor and test strips have reached room temperature (+20°C to +26°C).
Repeat the test using a new test strip as soon
as the measuring environment, blood glucose
monitor and test strips have reached room temperature (+20°C to +26°C).
• Insert an unused test strip that has not ex-
pired.
• Repeat the blood glucose measurement.
Remove batteries, reinsert batteries. Contact
Customer Services if the problem persists.
Repeat the measurement using a new test
strip.
Remove batteries, reinsert batteries. Contact
Customer Services if the problem persists.
Remove batteries, reinsert batteries. Contact
Customer Services if the problem persists.
Beurer GL50 mg/dL 33
Page 34
Problem: device does not switch on
Cause Solution
Batteries empty. Replace batteries.
Incorrectly inserted or missing batteries.
Test strip inserted incorrectly or not completely.
Device faulty. Contact Customer Services.
Problem: the test does not start after inserting the test strip into the device and applying
blood.
Cause Solution
Insucient blood or test strip not filled correctly.
Faulty test strip.
Blood was applied while the device was
switched o.
The basic settings of the device have been
changed and these changes were not completed (see “4.2 Making and changing basic
settings” on page 15).
Device faulty. Contact Customer Services.
Check whether the batteries have been inserted correctly (see “4.1. Removing the battery insulation strips, replacing the batteries”
on page 14).
Firmly insert the test strip into the slot on the
device with the contacts first. Make sure that
the front of the test strip is facing you (see “Test
strip” on page 13).
Repeat test using a new test strip and a larger
drop of blood.
Repeat the test using a new test strip.
Repeat
the test using a new test
apply blood when flashes.
Remove the test strip and press the ON/OFF
button until “0FF” is displayed.
Repeat test.
strip and only
34 Beurer GL50 mg/dL
Page 35
9 technical specifications
Dimensions (L x W x H) 123 x 28 x 16 mm
Weight 36 g (incl. batteries)
Power supply 2 x 3 V CR 2032 button cell batteries
Battery life
Measured value memory 480 measured values with date/time
Average values for 7, 14, 30, 90 days
Automatic switch-o Two minutes after last actuation
Storage/
transport temperature
Operating ranges Temperature: +10°C – +40°C
Measuring range, glucose Glucose: 20 – 630 mg/dL
Blood sample capillary whole blood
Required volume of blood 0.6 microlitres
Blood glucose measuring duration Approx. 5 seconds
Calibration Plasma
Test procedure Amperometric bio sensor
Usage Suitable for self-testing
System function test Each time device is switched on
EMC
This device complies with the European standard EN 61326 and is subject to specific precautions
with regard to electromagnetic compatibility. Please note that portable and mobile HF communication systems may interfere with this unit. For more details, please contact Customer Services at the
address indicated.
Test strip functionality
Test strips enable a quantitative measurement of the glucose level in fresh whole blood. When the gap
for taking blood comes into contact with a drop of blood, it is automatically filled by simple capillary
action. The blood is sucked into the absorbing gap on the test strip and the blood glucose monitor
measures the blood glucose level in the blood.
The test is based on the measurement of an electric current that is generated by the chemical reaction
of the glucose with the enzyme glucose dehydrogenase (Aspergillus sp.) on the strip.
During the reaction, a mediator transports electrons through the electrode surface and so generates a current.
The blood glucose monitor analyses this current. The current flow is proportional to the glucose content in the blood sample. The results are shown on the blood glucose monitor display.
Over 1000 measurements
Data retained when batteries are changed
Temperature: +2°C – +30°C
Relative humidity: < 90%
Relative humidity: < 90% non-condensing
Beurer GL50 mg/dL 35
Page 36
Only a small amount of blood is required (0.6 microlitres) and measurement takes approx. five seconds. The test strip detects blood glucose values from 20 to 630 mg/dL.
Chemical components of the test strip sensor
•
FAD glucose dehydrogenase 6%
•
Potassium ferricyanide 56%
•
Non-reactive components 38%
Control solution functionality
The control solution contains a fixed amount of glucose that reacts with the test strip. A test with
control solution is similar to a blood test. However, control solution is used instead of blood. The
measured result using control solution must be within the result range. This range is printed on each
test strip box.
Chemical composition of the control solution
The control solution is a red solution with the following D-glucose level (in percentage shares):
Ingredients Control solution LEVEL 3 Control solution LEVEL 4
D-glucose 0.14% 0.37%
Non-reactive components 99.86% 99.63%
Standards
The Beurer GL50 blood glucose monitor complies with the European standards: IVD (98/79/EC) and
MDD (93/42/EC).
Comparison of measured values with laboratory values
Performance characteristics: accuracy and precision
Whole blood glucose test results were compared with the YSI 2300 laboratory device. At a concentration of < 75 mg/dL ≥ 98% were at +/-15 mg/dL, while at a glucose concentration of ≥ 75 mg/dL
≥ 98% were within 20% of the reference values. The CV (coecient of variation) is < 5%. The blood
glucose monitor is therefore comparable to a laboratory system.
You will find further details and information regarding blood glucose results and various technologies
in general medical literature on the subject.
36 Beurer GL50 mg/dL
Page 37
Usage limits for specialist personnel from the healthcare sector:
1
. If the patient exhibits the following symptoms, it may be the case that no correct values can be ob-
tained:
•Acutedehydration
•Acutehypotension(lowbloodpressure)
•Shock
•Hyperosmolarhyperglycaemiccondition(withorwithoutketosis)
2
. Lipaemic samples: cholesterol levels up to 500 mg/dL and triglycerid levels up to 1,000 mg/dL do
not influence the results. Severely lipaemic blood samples were not tested with the Beurer GL50
monitor; therefore, using the device with these samples is not recommended.
3
. Blood glucose monitors designed for home use should not be used for severely ill patients.
4
. The eect of interfering substances on the measurements depends on the concentration in the blood.
The maximum concentrations of certain substances listed below do not significantly influence the
measurements.
Influence
Concentration of
tested substances
Ascorbic acid
Ibuprofen
L-dopa
Sodium salicylate
Tetracyclin
Tolbutamide
Unconjugated bilirubin
Uric acid
Xylose
Beurer GL50 mg/dL 37
50.0 mg/dL
1.8 mg/dL
1.5 mg/dL
8.0 mg/dL
4.0 mg/dL
Blood glucose value
4.0 mg/dL
50.0 mg/dL
100.0 mg/dL
2.4 mg/dL
80 mg/dL 120 mg/dL 500 mg/dL
10.9% -1.8% 4.6%
3.1% 2.9% 4.6%
10.6% 7.9% 4.9%
-2.6% 9.4% -0.8%
-5.3% 3.8% 3.2%
-2.6% 12.3% 0.9%
-2.5% 4.1% -0.2%
2.7% 9.6% -1.8%
7.6% 0.8% 7.5%
Page 38
10 Guarantee and customer service
Warranty
We oer a 3-year product warranty against material and production faults.
The warranty does not cover:
•
Damage due to improper operation
•
Wearing parts
•
Deficiencies already known to the customer upon purchase
•
Cases of personal negligence on the part of the customer
•
Outside interference
The warranty does not aect the customer’s statutory rights. To assert a warranty claim within the
warranty period, the customer must provide proof of purchase. The warranty claim must be submitted within a period of 3 years from the date of purchase to BEURER GmbH, Söflinger Straße 218,
D-89077 Ulm (Germany). In the event of a warranty claim, the customer reserves the right to have the
goods repaired at our own workshop or at a workshop authorised by us. No further rights are granted
to the customer (on the basis of the warranty).
Customer service address
Please contact our customer service if you have any questions: Please refer to the address list enclosed for our customer service address.
OUR COMMITMENT TO YOU: We aim to satisfy you by providing high-quality medical products
and the best customer service. Please contact our customer service if you are not entirely satisfied
with the product.
38 Beurer GL50 mg/dL
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Page 40
GL50_mg/dL_0813_GB Subject to errors and changes
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