Roche CoaguChek XS System User Manual page 46

Error: Test Strip Expired
The test strip has expired.
Error: Test Strip
Unusable
The test strip is unusable.
40
Solution:
Check the meter's date
setting. If it is not correct,
set the correct date. For
more information, see the
Meter Setup section of
this manual.
If the date is correct, turn
the meter off and remove
the code chip and the
test strip. Then use the
code chip and a test strip
from a new box of test
strips.
Solution:
Turn the meter off,
remove the test strip, and
then re-insert it. If the
error message reappears,
discard the unusable test
strip and use a new one
.