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qualitycontrol-176
ANALYTICAL PROCEDURE VARIANCE — The text lists reasons why analytical procedure variance may be observed. Which of the following is NOT listed as a cause of analytical procedure variance?
A. Deterioration of reagents
B. Inadequate mixing of reagent and sample
C. PATIENT NON-COMPLIANCE WITH FASTING INSTRUCTIONS — this is a preanalytical variable, NOT an analytical procedure variance cause
D. Exposure of light-sensitive colored end products to light
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