60
3. If the control solution test result is out of range
PROBABLE CAUSE
WHAT TO DO
Error in performing the test.
Read the instruction thor-
oughly and repeat the test
again.
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, monitor,
and test strips should come
to room temperature 68°F to
77°F (20°C to 25°C) before
testing.
Test strip deterioration.
Repeat the test with a new
test strip.
Meter malfunction.
Contact the Customer
Service Line at 1.888.90.
VERTEX
