Accu-Chek Aviva Combo Owner's Booklet page 83

Out-of-Range Control Test Results
If the control test result is out of range, check this list to help solve the problem:
Troubleshooting Checks
1. Were either the test strips or control solutions
expired?
2. Did you wipe the tip of the control solution bottle
before use?
3. Were the caps on the test strip container and the
control solution bottle always closed tightly?
4. Was the test strip used immediately after it was
removed from the test strip container?
5. Were the test strips and control solutions stored in
a cool, dry place?
Actions
Discard the test strips or control solutions if either is
past the "Use By" date. If the control solution was
opened more than 3 months ago, discard it. Repeat
the control test with an unexpired test strip and an
unexpired control solution.
Wipe the tip of the bottle with a tissue. Repeat the
control test with a new test strip and a fresh drop of
control solution.
Replace the test strips or control solutions if you
think either was uncapped for some time and repeat
the control test.
Repeat the control test with a new test strip and a
fresh drop of control solution.
Repeat the control test with a properly stored test
strip and control solution.
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