What are the rules, as stated by CLIA, for the number and frequency of control tests that a laboratory should run on a qualitative assay?
A) A test of one positive and one negative control must be run at least once per day.
B) A test of three controls at unknown concentrations must be run at least twice per day.
C) A test of two controls at different concentrations must be run at least once per day.
D) A test of two different positive controls must be run at least twice per day.
A
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