P24 Test For Hiv

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Positive P24, but still not testing positive for HIV 18 months later

Friend tested positive for P24 one month after sexual exposure when he became ill. Two years later he has had all negative AIDS tests including three viral load tests. F/U P24 tests are negative. T cells fine. He had a history of giving blood w/o...

Response from Ewald Horwath, M.D.

University of Miami School of Medicine

The p24 antigen is not recommended for screening purposes for several reasons. One reason is that it is subject to false positive reactions due to the presence of interfering substances in the blood. In view of the subsequent negative p24, HIV... Read more »

p24 antigen and HIV testing positive

Hello, I tested positive in September this year. And one of the bands listed was p24. My question... Read more »

Response from Mark Holodniy, M.D., F.A.C.P., C.I.C. »

HIV testing and the P24 test

HiThanks for answering my question, I'm finding it really difficult to find the correct... Read more »

Response from Ewald Horwath, M.D. »

Go to Ask the Experts »

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My name's Chris Pilcher and I'm a HIV researcher from UCSF [University of California, San Francisco]. I'm principally interested in HIV diagnostics and particularly in detecting and managing acute HIV infection. The poster is appropriately titled,... Read more »

U.S. Centers for Disease Control and Prevention

Reasons for Not HIV Testing, Testing Intentions and Potential Use of an Over-the-Counter Rapid HIV Test in an Internet Sample of Men Who Have Sex With Men Who Have Never Tested for HIV

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AAHIVM Reaffirms Support for Routine HIV Testing, Calls Upon All Medical Providers to Perform at Least One HIV Test on National HIV Testing Day June 27

Washington, D.C. -- With the overhaul of the nation's health care system at center stage for the White House, the Congress and the country, the American Academy of HIV Medicine (AAHIVM), on National HIV Testing Day 2009, affirms its commitment to... Read more »

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p24 test info?

Posted by Anonymous, 2 Replies

So my docter recommended that I get a p24 antigen test 10 days after a possible exposure. Does anyone know exactly how accurate the test is and what the window period for that specific test is? I'll get my results any day now but and I plan on... Read more »

Can Antibody testing, 2 DNA PCR and a P24 be wrong

Posted by Anonymous, 5 Replies

I have had the following NEGATIVE tests:

Antibody Tests: 8, 10, 12, 13, 15, 17 wks
Qual. DNA PCR's: 12(HIV-1, HIV-2), 15(HIV-1 Labcorp) wks
P24 Antigen: 17wks

Had an ARS illness, worst flu of my life almost 3 months ago and still have thrush, vision... Read more »

p24 antigen test

Posted by Anonymous, 3 Replies

is it true the p24 antigen test is only accurate 2-4 weeks after infection ? Read more »

4th gen test p24 again

Posted by Anonymous, 3 Replies

seems to me the so called 4th generation test is only good up until 3 weeks after infection. all the research i have done says the p24 antigen test is only good 1-3 weeks after one would have been exposed. so this would mean if i tested at 6 weeks... Read more »

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