8 checking the system
control solutions
The control solutions are used to check the entire blood sugar measurement system. This allows you to
determine whether the device and the test strips are working together optimally, and whether the test is
being carried out correctly. It is important to carry out the test with the control fluids regularly in order to
ensure that you are receiving precise measured results.
The control solutions contain a specified proportion of glucose which is precisely known. When you carry
out the blood sugar test with this liquid, you can check afterwards whether the measured value is within the
range of the actual value. The actual value for the control solutions is printed on the test strip container.
There are two different, colour-coded control solutions, one for the "normal" value range (green) and the
other for the "high" value range (red).
The control solutions should be used:
• to practise the blood sugar test.
• to ensure that the device and the test strips are working perfectly together.
• to check that the test has been carried out correctly.
Before you carry out the first blood sugar test, you should carry out three successful tests with the control
liquid one after the other. This makes sure that you are able to carry out the test correctly, and that the
device is working perfectly. If all three test results reach the value which is printed on the test strip container,
you can start carrying out the actual blood sugar measurement.
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