
22
Expired or contaminated
control solution.
Check the expiry date of the
control solution.
Control solution that is too
warm or too cold.
Control solution, meter, 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.
Meter malfunction.
Please contact customer
services.
Improper working of meter
and test strip.
Please contact customer
services.