Roche CoaguChek XS System User Manual page 49

Error: Measurement
Error
Measurement error
caused by the blood
sample.
Solution:
If you see "error 7," this
means the meter was
unable to detect a clot.
Repeat the test. Be sure
to carefully follow the
steps on the previous
pages. For example,
make sure the fingertip
is thoroughly dry, use the
meter on a surface free
of vibrations, and apply
the blood drop within 15
seconds of sticking the
fingertip. If you still get
"error 7," call your doctor
immediately to arrange
for testing using another
method.
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