Lifescan ONE TOUCH BASIC BLOOD GLUCOSE MONITORING SYSTEM Owner's Booklet page 54

MESSAGE PROBLEM
4) There was not enough
blood on the Test Strip.
5) The Meter was used in
very bright light.
6) The Check Strip procedure
was incorrect.
7) The Meter may not be
operating correctly.
WHAT TO DO
Repeat the test with a new
Test Strip and a larger drop
of blood.
Move the Meter out of
direct light and repeat the
test with a new Test Strip.
Repeat the Check Strip test.
Call LifeScan Technical
Services.
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