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ISO 15189:2007 TERMS — The text defines MATRIX EFFECT. What is the ISO 15189:2007 definition of Matrix Effect?
A. Matrix effect is the statistical variation in results due to random measurement errors
B. Matrix effect refers to different reference ranges for different patient populations
C. A CONSTITUENT OR ARTEFACT IN THE CONTROL MATERIAL THAT CAUSES A METHODOLOGY OR INSTRUMENT TO GIVE CONSISTENTLY HIGHER OR LOWER VALUES (demonstrating a positive or negative bias)
D. Matrix effect describes the interference of hemolysis on all laboratory tests
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