Beurer GL 42 User Manual

mg/dL

instructions for use

Codefree

BLOOD GLUCOSE MONITOR

Step by Step

GL42

GB

Beurer GmbH • Söflinger Straße 218 • 89077 Ulm, Germany
www.beurer.com

germanlengineering

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 ........................................................................................................ 6

2. Warnings and safety notes ...........................................................................................7

3. Description of units and accessories ....................................................................11

3.1 Blood glucose monitor ................................................................................................ 11

3.2 Display symbols ........................................................................................................... 12

3.3 Test strips ...................................................................................................................... 12

4. Initial use and basic settings ..................................................................................... 14

4.1 Removing the battery insulation strips, replacing the battery ............................. 14

4.2 Making and changing basic settings........................................................................ 14

5. Blood glucose measurement ....................................................................................15

5.1 Evaluating the result .................................................................................................... 15

5.2 Evaluating measured blood glucose values .......................................................... 16

6. Functional check using control solution ............................................................17

7. Measured value memory spaces ............................................................................ 20

7.1 Displaying individual values ....................................................................................... 20

7.2 Displaying average blood glucose values ............................................................... 21

7.3 Displaying average blood glucose values for highlighted values ....................... 21

7.4 Deleting individual measured values from the memory ........................................ 23

7.5 Deleting all stored values ........................................................................................... 24

8. Storing, maintaining and disinfecting the device ............................................ 24

8.1 Cleaning ........................................................................................................................ 24

8.2 Disinfection ................................................................................................................... 24

9. What if there are problems? ......................................................................................25

10. Technical specifications .............................................................................................27

11. Comparison of measured values with laboratory values ............................ 28

12. Warranty and customer service ............................................................................... 30

Beurer GL42 mg/dL 3

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, 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 notes they contain.
With kind regards,
Your Beurer team.

Getting to know your instrument

The GL42 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 large display shows the 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.

4 Beurer GL42 mg/dL

1.1 Delivery scope, replacements and accessories

Check that the set packaging has not been tampered with and make sure that all components 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.

A

B

D

C

G

E

F

A 1 Blood glucose monitor

B 1 lancing device

C 10 test strips

D AST cap with groove for taking blood samples from alternative parts of the body

E 1 button cell battery, 3 V CR2032 (already inserted)

F 10 sterile lancet needles

G 1 practical case

These instructions for use, additional information

•

If the packaging has sustained considerable damage or the contents are incomplete, please return

the system to your retailer.

•

The blood glucose monitor, test strips and additionally available control solutions have been specially
designed to complement each other. For this reason, use only test strips and control solutions that
have been approved for this blood glucose monitor.

Note

•

Use original manufacturer accessories only.

Beurer GL42 mg/dL 5

Follow-up purchases

You can also obtain test strips, control solution and lancet needles without a prescription.

Item REF PIP Germany

50 test strips REF 461.15 PIP 10146271

Control solution LEVEL 5 and 6 REF 457.11 PIP 10146288

100 lancet needles REF 457.01 PIP 03774707

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

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.

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 Observe the instructions for use

Temperature limit
+2 °C to +30 °C

Not for re-use/For single use only

Use by

6 Beurer GL42 mg/dL

PCT: certification symbol for
products that are exported to the
Russian Federation and members
of the CIS

Green dot (Der Grüne Punkt):
German dual waste collection
system

Maximum shelf life after initial

warninGs and safety notes

opening in months

Contents sucient for <n> tests

Batch designation

Sterilised by radiation (lancets)

Warning, see accompanying
documents

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.

Itemno.

/

Order number

Unit of measurement for blood
glucose value

Biohazard, risk of infection

2.

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 measure-

ment 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).

Beurer GL42 mg/dL 7

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.

•

Despite the simple usage of the Beurer GL42 monitor for self-monitoring of blood glucose levels, you

may possibly need to obtain instructions for using the system from your healthcare professional (for
example, your GP, chemist or diabetes consultant). Only proper use will guarantee exact 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 may lead to
incorrect measured results.

•

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 60%), the displayed blood glu­cose value may be too low; in the event of a very low hematocrit value (below 20%), 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.

• The level of Acetaminophen (up to 10 mg/dL), Ascorbic acid (up to 4 mg/dL), Bilirubin (up to
20 mg/dL), Cholesterol (up to 500 mg/dL), Creatinine (up to 10 mg/dL), Dopamine (up to 5 mg/dL),
EDTA (up to 400 mg/dL), Fructose (up to 200 mg/dL), Galactose (up to 200 mg/dL), Gentistic acid
(up to 2 mg/dL), Glutathione (up to 3 mg/dL), Haemoglobin (up to 200 mg/dL), Heparin (up to
60 mg/dL), Ibuprofen (up to 40 mg/dL), Icodextrin (up to 200 mg/dL), Lactose (up to 200 mg/dL), L‐
DOPA (up to 3.0 mg/dL), Maltose (up to 200 mg/dL), Methyl‐DOPA (up to 1.25 mg/dL), Pralidoxime
Iodide (up to 1.25 mg/dL), salicylate (up to 20 mg/dL), Tetracycline (up to 4 mg/dL), Tolazamide
(up to 55ug/dL), Tolbutamide (up to 100 mg/dL), Triglyceride (up to 3000 mg/dL), Uric acid (up to
7mg/dL), and Xylose (up to 5 mg/dL) in blood has no significant interference reaction (the average
dierence between the test sample and the control sample ≤ 0.55 mmol/L (10 mg/dL) at glucose
concentration of 50~100 mg/dL and ≤ 10% at glucose concentration of 250‐300 mg/dL) on GL42.

• The xylose level (up to 10 mg/dL) in the blood causes a significant deviation with the GL42 device
(average deviation between test and control test >0.55 mmol/L (10 mg/dL) with a blood glucose
concentration of 50-100 mg/dL and >10% with a blood glucose concentration of 250-300 mg/dL).

•

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 di­luted with tissue fluid and this may lead to an incorrect result.

•

Do not use the test strips above an altitude of 6,000 m.

8 Beurer GL42 mg/dL

•

Very high levels of humidity may influence the test results. Relative humidity of more than 90% may

lead to inexact results.

Note

•

The Beurer GL42 mg/dL measuring system is intended for measuring capillary and venous 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, parts of the lancing device, 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.

Batteries / Saving measured values

Warning

•

Keep batteries out of the reach of children. Children could 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.

•

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.

Beurer GL42 mg/dL 9

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.

•

Do not dismantle the lancing device into individual parts, except in the steps described in these in-

structions.

•

Please contact Customer Services for repairs.

Disposal

Warning

•

It is essential to comply with the generally applicable safety precautions for handling blood when
disposing of materials of 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.

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 WEEE (Waste Electri­cal and Electronic Equipment). If you have any questions, please contact the local authorities
responsible for waste disposal.

10 Beurer GL42 mg/dL

3.
description of units and accessories

3.1 Blood glucose monitor

Front

1. Slot for test strips

2. Rocker switch “+”, “-”

3. Display

4. Highlight button

5. On/O button

Rear

1. Battery compartment (bottom side)

2

1

3

4
5

CR 2032 H

1

3V

Beurer GL42 mg/dL 11

3.2 Display symbols

1. Date

2. Symbols for highlighting measured values

3. Measured value display, display , ,
Average blood glucose,

4. Temperature symbol

5. Memory symbol

6. Speaker symbol

7. Replace battery symbol

8. Blood glucose unit mmol/L – not functional

9. Blood glucose unit mg/dL

10. Hand symbol

11. Test strip symbol

12. Blood droplet symbol

13. Time

Note

The blood glucose monitor is supplied with the following basic settings:

•

Blood glucose unit: mg/dL

•

Acoustic signal on

1

2

3
4

5
6 8

7

3.3 Test strips

Front Back

1

2

AM
PM

mg/dLMem

mmol/L

13
12
11
10

9

3

1. Gap for blood input

2. Handle

3. Contacts

12 Beurer GL42 mg/dL

You can identify the rear by the contact tracks.

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 measurements 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 .

•

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 ).

•

Do not use the test strips if one of the 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.

Beurer GL42 mg/dL 13

4.
initial use and basic settinGs

4.1 Removing the battery insulation strips, replacing the battery

Note

•

Remove the insulation strip before initial use.

Remove the battery compartment lid on the underside of the device.

1

If you are replacing the battery, reset the date and time as required (“Making and changing

2

basic settings” on page 14).

Insert a new battery of type CR 2032 3 V. Make sure that the battery is inserted with the correct

3

polarity, according to the label. See the graphic in the battery compartment.

Close the battery compartment lid again carefully.

4

Note

•

The batteries are almost empty if the replace battery symbol appears. Replace the battery 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 battery and then reinsert it. Alternatively, press the “+” button

1

[2] and the On/O 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 to retrieve them later.

• The time is displayed in the 24-hour format.

Set the year (calendar to 2099) by pressing the “+” or “–” [2] button. Confirm by pressing the
On/O button [5].
The day display flashes.
Proceed as described above for the month, day, hour and minute.

CR 2032 H
3V

14 Beurer GL42 mg/dL

Switching the acoustic signal on/o

blood Glucose measurement

3

To switch the acoustic signal o, press the “+” or “–” button.
“ ” and “ ” is displayed.
The speaker symbol is no longer shown in the display.
Confirm by pressing the On/O button [5].
“Mem” and “ ” are displayed.

Deleting stored values

4

Proceed as follows to delete stored values:

•

Press the

•

Confirm by pressing the On/O button

•

To irreversibly delete your values, press the On/O button again to confirm. “Mem”, “ ” and

“

If you do not wish to delete your values, press the “+” or “–” [2] button. “
displayed again. Confirm by pressing the On/O button.

The blood glucose monitor is now ready for use.

5

“+”

or

“–”

” are displayed.

button. “Mem” and “ ” are displayed.

[5]

. “Mem” and “ ” flash in the display.

Mem

” and “ ” are

5.

Warning

Before starting to take blood samples, make sure without fail that you have read the enclosed in­structions for use, “Taking blood samples”. These instructions describe how to prepare and take a
blood sample correctly.

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.

•

The device switches itself o if the test strip has already been inserted into the device but no blood
is added to the test strip within two minutes. 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.

5.1 Evaluating the result

As soon as the gap is suciently filled with 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 the measured value. For explanations and measures for the measured values, see chapter
“5.2 Evaluating measured blood glucose values”. If an error message is displayed, read chapter
“9. What if there are problems?”

Beurer GL42 mg/dL 15

Highlighting measured values

You have the following options to highlight measured values.

Before meals.

After meals.

General highlight (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
meals.

The measured value can be highlighted as soon as it is displayed. You cannot highlight it later.
For this purpose, briefly press the highlight button [4].
a) Pressing once highlights the value with .
b) Pressing again highlights the value with .
c) Pressing yet again highlights the value with .
d) Pressing once more removes the highlight.

The selected label is stored in the memory of the device when it is switched o.

5.2 Evaluating measured blood glucose values

Your blood glucose monitor can process values between 20 and 630 mg/dL. The “ ” 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.

•

Immediately seek medical attention if your symptoms are not in line with your measured blood glu-

cose values and you have observed all instructions for the Beurer GL42 blood glucose monitor.

•

Do not ignore symptoms of too high/low blood glucose levels. Seek medical attention.

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

Plasma glucose

on an emp-

ty stomach Below 100 mg/dL 100 -125 mg/dL ≥ 126 mg/dL

Two hours after a meal

Source: German Diabetes Association (Deutsche Diabetes Gesellschaft – DDG) 2012

Normal blood

Suspicion Diabetes

glucose values

Below 140 mg/dL 140 -199 mg/dL ≥ 200 mg/dL

16 Beurer GL42 mg/dL

Evaluating critical measured values

functional check usinG control solution

Display Blood glucose Action

Very low blood glucose
level

Below 20 mg/dL

Low blood glucose level

Below 70 mg/dL

Seek medical attention immediately.

Have a suitable snack.
Follow your GP’s instructions.

High blood glucose level
On an empty stomach
above 100 mg/dL

Two hours after a meal
Above 140 mg/dL

High blood glucose level,
possibly ketones

Above 240 mg/dL

Very high blood glucose
level

Above 630 mg/dL

If this high value persists two hours after your last
meal, this may indicate hyperglycaemia. Seek
medical attention to coordinate any measures,
if applicable.

Perform a ketone test. For this purpose, seek
medical attention.

Take another measurement using a new test
strip. If the result is identical: seek medical at­tention immediately.

6.

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.

Beurer GL42 mg/dL 17

Important

•

Do not use third-party control solution. Correct functioning of the measuring device can only be

tested using the Beurer control solutions (LEVEL5 + LEVEL6).

•

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 measuring device, the test strip and the control solution must be the
same temperature. For the “Functional test using the control solution”, the temperature is to be be­tween 20 °C and 26 °C.

Hold the blood glucose monitor so that the display is facing you.

1

Insert a test strip into the slot on the blood glucose monitor with the contacts first. Make sure

2

that the front of the test strip is facing you (see “Test strips” on page 12).

The device automatically switches on and briefly shows the initial display. The device is ready

3

for measurement as soon as the hand

IMPORTANT: Control solutions and blood react to temperature influences in dierent 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.

Note

Press the rocker switch “+” or “–” [2] to change to the control mode. “
display. This means that the result value is not stored in the memory, therefore not influencing
your measured value statistics. Press “+” or “–” [2] again. “ ” disappears from the display
and the value is stored normally in the memory.

A clean surface is required to correctly perform a functional test.

4

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

Do not apply the drop directly to the test strip to avoid contaminating the remaining control
solution in the bottle by touching the test strip with the tip of the bottle.

and the symbol flash.

” is shown on the

18 Beurer GL42 mg/dL

Hold the input gap (at the tip of the test strip) to the drops of control solution until the gap is

5

completely filled and the measuring device in the display starts counting backwards.
When the gap is suciently 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.

Check whether the result is within the specified range of results for the control solution. This

6

range of results is printed on the test strip box.

Expected results

At room temperature, the measurements of 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.

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 correctly.

•

The bottle was not shaken well enough.

Control solution and/or test strips have passed
their expiry date or are contaminated.

The control solution, test strips or blood glucose
monitor are 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.
For example

•

Test strips that were exposed to fresh air for

too long.

•

The test strip box was not closed completely.

Old test strips. Open a new box of test strips. Repeat the test.

There is a problem with the blood glucose moni­tor.

Functional test was incorrectly performed. Repeat the test and follow the instructions.

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 test
strips and control solution.

Repeat the test using a new test strip and/or a
new box of correctly stored test strips.

Contact Customer Services.

Beurer GL42 mg/dL 19

Warning

measured value memory spaces

Do not use the system to measure your blood glucose level if you are repeatedly provided with
measurements outside the specified range when using control solution. Contact Customer Services.

7.

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/O button to switch o the de­vice.

7.1 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 measuring device on using the On/O button [5]. The initial display is shown

1

briefly. Press the “+” or “–” rocker switch [2].

The most recent measured value and the number of saved blood glucose tests are dis-

2

played. The display then switches and, instead of the number of saved blood glucose tests,
it then shows the date of the most recent measurement.

mg/dLMem

Image 1 Image 2

20 Beurer GL42 mg/dL

mg/dLMem

Pressing the rocker switch “–” [2] will display the previous measured value each time. You

3

can display a maximum of 480 previous measurements.

You can cancel the process at any time. To do so, press the On/O button or wait until the

4

device switches itself o automatically after two minutes.

7.2 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 measuring device on using the On/O button [5]. The initial display is shown briefly.

1

Press the “+” rocker switch [2] twice.
The measurement unit of the blood glucose value, “ ” and the average value are displayed.

Press “+” [2] 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/O button or wait until the

3

device switches itself o automatically after two minutes.

Item explanation

1. Average value

2. Time period, e.g. 7

3. Number of saved values used to calculate the aver-

age

3

2

1

mg/dLMem

7.3 Displaying average blood glucose values for highlighted 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 [5]. The initial display is shown briefly. Press

1

the “+” rocker switch [2] twice.
The measurement unit of the blood glucose value, “ ” and the average of all measured
values are displayed.

Beurer GL42 mg/dL 21

Press “+” [2] repeatedly to display the average value of all

2

measured values for 14, 30 and 90 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.

mg/dLMem

Press “+” [2] repeatedly to display the average value from the last 14, 30 and 90 days “be­fore meals” .

After displaying the average value for 90 days “before
meals”

•

the seven-day average for values measured “after meals”

•

the symbol

•

the unit of measurement for blood glucose values and

•

“ ”

are shown on the display.

mg/dLMem

Press “+” [2] repeatedly to display the average value from the last 14, 30 and 90 days “after
meals” .

22 Beurer GL42 mg/dL

After displaying the average value for 90 days “after meals”

2

• the average for the last seven days of values highlighted

as “general”

•

the symbol

•

the unit of measurement for blood glucose values and

•

“ ”

are shown on the display.

mg/dLMem

Press “+” [2] repeatedly to display the average value from the last 14, 30 and 90 days for
values highlighted as “general” .

You can cancel the process at any time. To do so, press the On/O button or wait until the

3

device switches itself o automatically after two minutes.

Note: Speed function

You are in the measurements memory. By pressing the highlight button [4], you can switch to the
dierent 7-day average values. In this way, you can get to the desired average value more quickly.
For example:

mg/dLMem

mg/dLMemmg/dLMem mg/dLMem

7.4 Deleting individual measured values from the memory

Press the buttons as described in 7.1 until the value appears that you would like to delete.

1

Press the On/O button, keep it pressed and also press down the “-” button for approx.

2

2seconds.
“ ”, “

Mem
Press the On/O 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.

Beurer GL42 mg/dL 23

” and the number of the value to be deleted flash.

Mem

” and “ ”

The device then indicates that the subsequent measured value has moved to the memory

storinG, maintaininG and disinfectinG the device

3

space of the deleted measured value.

7.5 Deleting all stored values

Proceed as described in “4.2 Making and changing basic settings”. After explaining how to set the
acoustic signal, the section explains how to delete the measured value memory.

8.

Storing

Keep the Beurer GL42 blood glucose monitor in the case supplied after each measurement and do
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.

8.1 Cleaning

Device

Only clean the device when it is switched o.
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 get into the device.

Lancing device

Clean the surface of the lancing device using a soft, slightly damp cloth (water, a mild cleaning so­lution or rubbing alcohol). The lancing device must not be immersed in water or other liquids or be
cleaned in the dishwasher. Dry the lancing device using a lint-free cloth.

8.2 Disinfection

Device

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.

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.

24 Beurer GL42 mg/dL

•

what if there are problems?

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 tel-

ephones.

9.

Display messages on batteries and blood glucose measurement

no. Cause Solution

LP Empty battery. Replace battery.

Ht

Lt

Err

Err001 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.

Repeat the test using a new test strip as soon as
the measuring environment, measuring device
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, measuring device
and test strips have reached room temperature
(+20 °C to +26 °C).

•

Insert an unused test strip that has not ex­pired.

• Repeat the blood glucose measurement.

Remove battery and reinsert battery. Contact
Customer Services if the problem persists.

Err002 Insucient blood on the test strip.

12
127
130

Beurer GL42 mg/dL 25

System error. Contact Customer Services.

Unknown error messages.

Repeat the measurement using a new test strip.

Remove battery and reinsert battery. Contact
Customer Services if the problem persists.

Problem: device does not switch on

Cause Solution

Empty battery. Replace battery.

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

Insucient 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 were changed
and the changes were not completed (see “Mak­ing and changing basic settings” on page 14).

Device faulty. Contact Customer Services.

Check whether the battery has been inserted
correctly (see “Removing the battery insulation
strips, replacing the battery” 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
strips” on page 12).

Repeat test using a new test strip and a larger
drop of blood. Please note the correct filling of
the test strip.

Repeat the test using a new test strip.

Repeat the test
apply blood after and flash.

Remove the test strip and press the “On/O”
button until “ ” is displayed.
Repeat test.

using a new test strip

and only

26 Beurer GL42 mg/dL

10.
technical specifications

Dimensions (L x W x H) 88 x 51 x 15 mm
Weight 41g incl. battery
Power supply 1 x 3 V CR 2032 button cell battery
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, venous whole blood
Amount of blood 0.6 microlitres
Blood glucose measuring duration Approx. 5 seconds
Calibration Plasma
Test procedure Amperometric bio sensor
Use 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 provided.

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. Only a small

Beurer GL42 mg/dL 27

Over 1000 measurements

Data retained when batteries are changed

Temperature: +2 °C – +30 °C
Relative humidity: < 90%

Relative humidity: < 90% non-condensing

amount of blood is required (0.6 microlitres) and measurement duration is approx. five seconds. The

comparison of measured values with laboratory

values

test strip detects blood glucose values from 20 to 630 mg/dL.

Chemical components of the test strip sensor

•

FAD glucose dehydrogenase 10%

•

Potassium ferricyanide 46%

•

Non-reactive components 44%

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 5 Control solution LEVEL 6
D-glucose 0.12% 0.35%
Non-reactive components 99.88% 99.65%

Standards

The Beurer GL42 monitor corresponds to European guidelines IVD (98/79/EC) and
MDD (93/42/EC).

11.

Precision

Three lots of the GL42 blood glucose test strips have been tested to assess the precision of the GL42
blood glucose measuring system. This includes a repeat assessment using venous blood and a labora­tory precision assessment using the control material. The blood glucose content of the venous blood
samples ranges from 44.9 to 362.3 mg/dL and control material from three concentrations is used.

Results of the repeat precision measurements

Sample Venous blood

(mg/dL)

1 44.9 44.8 3.2 7.1

2 90.6 94.1 3.2 3.5

3 120.0 114.9 3.2 2.8

4 225.8 212.1 6.9 3.2

5 362.3 347.0 11.2 3.2

Grand mean
value (mg/dL)

Pooled standard de­viation

Pooled coecient
ofvariation (%)

28 Beurer GL42 mg/dL

Results of the intermediate precision measurement

Sample Control material

(mg/dL)

1 46.2 43.8 2.2 5.1

2 135.0 131.7 3.7 2.8

3 350.0 346.3 8.5 2.4

System accuracy

The GL42 blood glucose monitor in comparison with the YSI.
Three lots of GL42 blood glucose test strips have been tested to assess the system accuracy of the
GL42 blood glucose measuring system and to compare it with the reference method in which capil­lary whole blood concentrations of 24.8 to 715 mg/dL have been used.

Result of the system accuracy for glucose concentrations <100 mg/dL (<5.55 mmol/L)

Within ±5 mg/dL
(Within ±0.28 mmol/L)

116/186 (62.4%) 172/186 (92.5%) 184/186 (98.9%)

Results of the system accuracy for glucose concentrations ≥100 mg/dL (≥5.55 mmol/L)

Within ±5% Within ±10% Within ±15%

250/414 (60.4%) 379/414 (91.5%) 413/414 (99.8%)

Results of the system accuracy for combined glucose concentrations between 24.8 mg/dL
(1.4 mmol/L) and 715 mg/dL (39.7 mmol/L).

Within ±15 mg/dL or ±15%
(Within ±0.83 mmol/L or ±15%)

597/600 (99.5%)

In comparison to the YSI, the GL42 met the EN ISO 15197:2013 standard, whereby 95% of the blood
glucose values measured have to fall within the following zones: either ±0.83 mmol/L (±15 mg/dL) of
the measured average value when using the reference measuring procedure for blood glucose con­centrations <100 mg/dL (<5.55 mmol/L) or ±15% for blood glucose concentrations of ≥100 mg/dL
(≥5.55 mmol/L). 99% of the individual measured blood glucose values must fall within zones A and
B of the Consensus Error Grid (CEG) for diabetes type 1.

Grand mean
value (mg/dL)

Within ±10 mg/dL
(Within ±0.56 mmol/L)

Pooled standard
deviation

Pooled coecient
of variation (%)

Within ±15 mg/dL
(Within ±0.83 mmol/L)

Beurer GL42 mg/dL 29

Performance evaluation by the user

warranty and customer service

A study to assess the glucose values of blood samples of capillary blood from the fingertips, which
were obtained from 150 individuals that had no special training, produced the following results:
100% within ±15 mg/dL (±0.83 mmol/L) and 98.9% within ±15% of the values obtained in the medi­cal laboratory with glucose concentrations of at least 100 mg/dL (5.55 mmol/L).

You will find further details and information regarding blood glucose results and various technologies
in generally relevant specialist medical literature.

12.

Warranty

We oer 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 aect the customer’s statutory liability 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.

30 Beurer GL42 mg/dL

Beurer GL42 mg/dL 31

751.178-0314_GL42_mg/dL_GB Subject to errors and changes