CDC instruction/quiz for HIV test interpretation

CDC instruction for HIV test interpretation [attached]
CDC instruction/quiz for HIV test interpretation

note – there’s no such thing as an “HIV only” test, only non-specific technologies applied to groups pre-determined to be “at risk,” whose test results are, therefore, considered “specific.”

“Establishing the cutoff value to define a positive test result from a negative one is somewhat arbitrary. Suppose that the test manufacturer initially considered that optical density ratios greater than “A” on the above figure would be called positive.

Where might the blood bank director and the head of drug treatment want the cutoff point to be for each program? Who would probably want a lower cutoff value?”

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