QC material is not true serum, plasma, urine or CSF and as such, it frequently does not act like a patient sample. This is referred to as commutability – the ability of a synthetic or non-human-based material to act like a human sample in a test system. As hard as manufacturers try to make their QC product commutable, problems still exist. Every tech knows that a shift in QC is not always reflected by a shift in patient sample results, and conversely a shift in patient sample results may not be mirrored by a shift in QC.
Patient Data as QC
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