Accu-Chek ACTIVE - Error Sources During Performance Checks

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Checking your meter
7.3 Possible sources of error during performance checks
If the result is outside the specied concentration
range, repeat the performance check. If the result of
the second check is also outside the concentration
range, please check the following points.
If your responses to the questions below are different
from those given, make the respective corrections
when you perform the next test. If you have taken all
of these points into account and the results are still
outside the specied concentration range, contact
your customer support and service centre.
If a performance check produces results that
are outside the specied concentration range,
it is no longer certain that the meter and test
strips are functioning properly. Blood glucose
tests may then produce incorrect results.
Incorrect results can cause the wrong therapy
recommendation to be made and so lead to
serious adverse health effects.