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Understanding Out-of-Range Control Results
If the control result is out of range, check this list to help solve the problem.
Troubleshooting Checks Action
1. Check if the test strips or control solutions were
expired.
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.
2. Check if you wiped the tip of the control solution
bottle before use.
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.
3. Check if the caps on the test strip container and
the control solution bottle were always closed
tightly.
Replace the test strips or control solutions if you
think either was uncapped for some time and repeat
the control test.
4. Check if the test strip was used immediately
after removing it from the test strip container.
Repeat the control test with a new test strip and a
fresh drop of control solution.
5. Check if the test strips and control solutions were
stored in a cool, dry place.
Repeat the control test with a properly stored test
strip and control solution.
50705_05853397002_EN.indb 51 4/24/12 8:32 AM
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