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The control solution
testing result is out of
range.
Error in performing
the test.
Read instructions thoroughly and
repeat the test again.
Control solution vial
was poorly shaken.
Shake the control solution
vigorously and repeat the test
again.
Expired or
contaminated
control solution.
Check the expiration date of the
control solution.
Control solution that
is too warm or too
cold.
Control solution, device, and
test strips should be at room
temperature (20°C to 25°C / 68°F
to 77°F) before testing.
Defective test strip.
Repeat the test with a new test
strip.
Device malfunction. Please contact customer service.
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