
Troubleshooting
128
Additional information on error E-406
P
ower the meter off and remove the test strip. Repeat the measurement using a new test strip
and blood taken from a new puncture site at the tip of another finger. Do not touch or remove the
test strip when a test is in progress.
Note on error E-406: The CoaguChek XS PT Test strip may be used for patients under a com-
bination therapy of oral anticoagulants plus heparin injections. For maximum heparin concentra-
tions which do not interfere with the test, refer to the package insert. Under no circumstances,
however, should heparinized capillary tubes be used for sample application. If capillary tubes are
used, use only the dedicated CoaguChek capillary tubes. Be sure to apply the blood drop to the
test strip within 15 seconds of lancing the fingertip. In rare cases, patients with long clotting
times (> 8 INR; < 5% Quick) may receive an “E-406” message on the meter display. If this error
message appears again when the test is repeated, the result must be checked using another
method.
E-406: Sample Error
Error message
Touch to exit this message. Perform the suggested step(s) to
solve the problem.
Sample Error
Unsuitable sample
composition. Check your
procedure and repeat the
test with a fresh sample.
Check medication regimen
of patient.
E-406
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