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A member asked:
Is a a negative result for hiv test ag/ab index 0.33cut off 0.35 at 4weeks conclusive? and why tests is so near to positive cut of value why this happen in tests?
A doctor has provided 1 answer
Are you certain the cut-off for a positive result was 0.35? That's unusual -- usually 0.9 or similar. But in any case, any result below the cut-off is 100% negative, no matter how close it may be to the cut-off number. It's a complex issue related to the biochemistry of the test.
Answered 5/4/2023
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