User Manual
24
Control Tests
3
Understanding Out-of-Range Control Results
wWARNING
The control solution ranges are printed on the test strip container label. If the control result is out of
range, check this list to help solve the problem.
Troubleshooting Checks Action
Were the test strips or control solutions expired? Discard the test strips or control solution if either
is past the use by date. If the control solution was
opened more than 3months ago, discard it.
Repeat the control test with an unexpired test
strip and an unexpired control solution.
Did you wipe 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.
Were the caps on the test strip container and the
control solution bottle always closed tightly?
Replace the test strips or control solution if you
think either was uncapped for some time. Repeat
the control test.
Was the test strip used immediately after it was
removed from the test strip container?
Repeat the control test with a new test strip and a
fresh drop of control solution.
Were the test strips and control solutions stored
in a cool, dry place?
Repeat the control test with a properly stored test
strip or control solution.
Did you follow the directions? Read the chapter Control Tests and repeat the
control test.
Did you choose the correct control solution level,
either 1 or 2, when you performed the control
test?
If you chose the wrong control solution level, you
can still compare the control result to the range
printed on the test strip container.
Are you still unsure of the problem? Contact Roche.
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