Sir I had unprotected oral sex 4 months back. I do not know her hiv status I went for a hiv test after 45 days it came negative .22 by CIMA method and now after 125 days of my possible exposure I went for a test it came .24 by CIMA method. My questions are:- 1) why the index ratio in my results changed does it means I can turn positive? 2) when is hiv test is conclusive? 3) am I free from hiv?

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