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Brasil, Sp - I am infected??
Nov 29, 2003

Dr.Bob,

please help and advise me with your professional opinions on my situation. Your answer to me will be greatly greatly appreciated. I went in for an HIV antibody test 4,5 months after possible exposure (low risk). The result came back reactive Elisa, inconclusive -elisa, but non-reactive - Western Blot hiv1, non-reactive - Western Blot hiv2 . Here are my questions in the light of this. 1. What is the difference between the Elisa and the Western Blot tests that they both produce different results? 2. What should I do or what test/s should I take now to ensure that I do not have hiv? Am I infected??Please help and answer my questions. Thanks a lot.

Simone (Brasil)Voc lindo!!

Response from Dr. Frascino

Hello Brazilian Simone,

Questions about HIV testing should be sent to the Safe Sex/HIV Prevention Forum, not the Fatigue/Anemia Forum. Consequently, I'll only respond very briefly.

ELISA and Western Blot HIV tests are antibody tests. The Western Blot is more sensitive, and is used as a confirmatory test for a positive (reactive) ELISA. Since your ELISA was "inconclusive," and your Western Blot non-reactive, your test should be considered negative. People in low-risk situations with indeterminate (inconclusive) tests are almost never infected with either HIV-1 or HIV-2. I do not believe you are HIV-infected based on your low-risk exposure and non-reactive Western Blot 4.5 months after potential exposure.

So, it's a Samba-WOO-HOO for you!

Dr. Bob


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