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HIV Test Inquiry

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March 12th, 2012
Dear Dr.

I had a protected exposure (Although I doubt the condom slipped) I had some HIV-like symptoms at the 4th week "fever, fungus, etc...) but it went away within 2 days.

I did the following:

1- "1 Month after" HIV-1/HIV-2 Antibodies + HIV-1 Antigen (Result Non-Reactive 0.2)
2- "2 Months after" HIV-1/HIV-2 Antibodies + HIV-1 Antigen (Result Negative 0.24)

Now I'm at 61 days "8.6 Weeks".

My kind questions are:

1- What are the chances per percentage that this results might turn positive if the test is taken next month "3 months after exposure", and 6 months after exposure?

2- What does the "0.2 and 0.24" mean?
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NickCA
replied March 12th, 2012
Experienced User
Hi,

1. The chances are pretty low. HIV tests are very sensitive. Most of the HIV+ persons test positive after 6 weeks. The chances are, I think, around 1%. Its my guess. I hope someone else will confirm my estimation.

2. 0.2 and 0.24 meas the strength of the signal in the ELISA assay. They are pretty weak: negative. The problem is if they are around 0.99. That is an intermediate result, so the test must be repeated. High values means positive. 0.2 and 0.24 is very low.

Nick
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NickCA
replied March 12th, 2012
Experienced User
And one more thing: if you test negative after 12 weeks you don`t need to test again. 12 weeks results are conclusive.
Nick
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