47
vertex
diagnostics
3. If the control solution test result is out of range.
Error in performing the test
Improper code number.
.
Read the instruction thoroughly
and repeat the test again.
Check if the code number on the
display matches the code number
on the test strip vial.
Do not shake the control
solution vial very well.
Shake the control solution vigorously
and repeat the test again.
Expired or contaminated
control solution.
Check the expiry date or the discarded
date of the control solution.
Control solution that is too
warm or too cold.
Control solution, meter, and test strips
should come to room temperature
(68~77°F/20~25°C) before testing.
Test strip deterioration.
Repeat the test with a new test strip.
Meter malfunction.
Contact local customer service.
POSSIBLE CAUSE
WHAT TO DO