PROFICIENCY or EXTERNAL QUALITY CONTROL TESTING
16
Art: 714378-00F Rev. Date: 31-Jan-12 16-1
Purpose
Samples from external quality control providers can be used to assess consistency of
results for a particular method or system across testing sites. Due to matrix effects
and additives, these samples should not be used as an indication of the system’s
true accuracy.
General Procedure for
Cartridges
Initiating Proficiency Tests from the Quality Tests menu allows results to be stored
in separate categories for the purpose of documentation and review. Proficiency
samples should be tested in the same way as patient samples.
The same CLEW is used for the patient test path and the Proficiency test path. The
Proficiency test path uses K
3
EDTA standardization coefficients for Hematocrit and
disables the CPB mode. It also uses the PREWARM mode for ACT. This ensures that
hematocrit and ACT results are consistent across all sites. Also, if star-outs occur
frequently when using the patient sample test path to test proficiency or external
quality control samples, they might be avoided by using the proficiency test path.
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