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?

Question

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According to CLIA, a laboratory should run a test of one positive and one negative control at least once per day for a qualitative assay. Option A is the only choice that accurately reflects this guideline. Option B refers to controls of unknown concentrations, which may not be applicable, and option D requires two different positive controls, which may not be necessary for all tests. Option C suggests running controls at different concentrations, but does not specify the number or type of controls, so it is also not the best choice.

What Are the Rules,as Stated by CLIA,for the Number and Frequency