|P24 Antigen positive!
Mar 8, 2011
Hello Dr. Bob,
I write you from Spain. First of all, thank you so much for the support given to people who need it. Said that, I report you my case: one year ago I had receptive oral sex with a guy whose serostatus is unknown. He ejaculated in my mouth but quickly I spit it. Well, 3 weeks later I tested positive for antigen p24 but negative for antibodies. I went to a famous HIV health center in Madrid (the place where a famous study of serodiscordants couples are being followed and no HIV oral transmission has been registered for 10 years), and there they told me to wait 3 months and to do an ELISA. So, 3 months later, I tested negative for ELISA fourth generation (antigen+antibodies).At the fourth month, I tested negative with Oradquick.Seven months after my exposure, I tested negative again in a rapid test.Again negative in 8th month (ELISA) and 9th(ELISA and WB). I have also tested undetectable in a PCR quantitative (50 copies) in the 8th and 9th month.Furthermore, in 9th month after exponsure, my cd4 was 872, cd8 630, ratio 1.38.
My question is easy. Was it a false positive for the antigen p24?
Thank you so much, best wishes!
(Sorry for my bad English)
| Response from Dr. Frascino
Yes, your question is easy and yes, your initial positive p24 antigen was a "false positive"! By the way, all you needed to prove this was the single negative HIV-antibody test at the three-month mark. The numerous (and highly excessive) other tests performed beyond that were not warranted or necessary. They merely reinforced what we already knew from your negative three-month test: that you are conclusively and definitively HIV negative!
Be well. Stop testing. Stop worrying!
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