Sir I have done my hiv test last 5 month before at that tim index value is 0.08 but now I have done same test from same lab this time index is .16 I am very scared what does mean its chance to positive? I have join pain since 6mont please tell me sir.
The "index value" (also called the "signal-to-cutoff ratio") is a technical term having to do with how this type of HIV-antibody test is conducted. Values less than 0.90, like yours, are definitively negative! Values between 0.9 and 1.0 would be equivocal or borderline.
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