Understanding Error Messages
Message
What It Means
A used test strip
was inserted.
The blood or control
solution sample was
applied before the
symbol appeared.
The temperature
during the test was
above or below the
operating range.
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What To Do
Repeat the test with a
new test strip.
Repeat the test with a
new test strip and
wait until the
symbol appears
before applying the
blood or control
solution sample.
Move to an area where
the temperature is
within the operating
range 50–104°F (10–40°C)
and repeat the test after
the meter and test strips
have reached a
temperature
within the operating
range.
Message
What It Means
The blood sample
has abnormally high
viscosity or
insufficient volume.
This error message
may appear when
the wrong blood
β-Ketone test strip is
used instead of the
KetoSens Blood
β-Ketone test strip.
There is a problem
with the meter.
What To Do
Repeat the test using
a new test strip.
Repeat the test after
inserting a KetoSens
test strip.
Do not use the meter.
Contact Customer
Service: 1-800-429-
5001 Mon–Sat, 9 am–
9 pm EST. At all other
times, contact your
healthcare professional.
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