How Does An HIV Antigen Test Work?

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AIDS InfoNet

HIV Testing

...antibodies. During this "window period" you can test negative for HIV even if you are infected. If you think you were exposed to HIV, you should wait for two months before being tested. You can also test right away and then again after two or three months. If you are infected, you can transmit HIV to others during the window period even if you test negative. About 5% of people take longer than two months to produce antibodies. Testing at 3...
Ask the Experts

Confusing Results

Hi Our Precious DocI must say my heartfelt gratification to your undying, untiring work here to educate the world on HIV risks... You are really a gift from God to all of us here... A big thank you and will donate to your foundation again.What do...
Robert J. Frascino, M.D.

Response from Robert J. Frascino, M.D.

The Robert James Frascino AIDS Foundation
...Hello,The p24 antigen test is highly specific, but not very sensitive. The primary use of this test is as a supplemental HIV diagnostic screening test. It may pick up some HIV infections an average of six days earlier than an HIV-antibody test.... Read more »

Dou Hiv antibody/p24 antigen test

Dear Dr Bob,thank you for your selfless work.I had an unprotected sexual encounter with someone of unknown status 7 weeks ago.I am desperate for some peace of mind.I want to take the HIV antibody/p24 antigen Duo Test,next week and would desperately...
Robert J. Frascino, M.D.

Response from Robert J. Frascino, M.D.

The Robert James Frascino AIDS Foundation
...Hi Tony,HIV-antibody tests taken prior to the three-month mark are not considered to be definitive or conclusive. You'll have to hold tight Read more »

P24 ag & Eia hiv antibody question

Dear Dr. Mark , First, I commend you on your dedication to this forum - your hard work is greatly appreciated.1) What do you think the combination of P24 ag test & Eia ab test (Murex 1.2.0 kit),both -, would be 3 months after a high risk exposure in...
Mark Holodniy, M.D., F.A.C.P., C.I.C.

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

Stanford University, School of Medicine
...A p24 antigen test 3 months after exposure is not of much value. Even after acute infection, most people with p24 antigen will be negative Read more »

HELP! Twinrix Hep A/B Vaccine NOT working! **SECOND TIME ASKING***

I was diagnosed with AIDS in 2002 with a cd4 of 2 and a vl of 175,000. Shortly after starting Kaletra and Combivir in 2003 I had my first round of Twinrix (hep a/b vaccination). After a few months a blood test revealed that the vaccine did not...
Mark Holodniy, M.D., F.A.C.P., C.I.C.

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

Stanford University, School of Medicine
...low your CD4 count was when you started treatment that you have lost a lot of your t cell clones that would respond to certain antigens like hepatitis viruses. You don't indicate whether you did not get any antibodies detected for both viruses or... Read more »
Henry J. Kaiser Family Foundation

More Than 35 Million Working-Age Adults Living With HIV/AIDS, International Labor Organization Report Says

...About 36.5 million adults of workingage are HIV-positive and about 28 million working-age adults have died from AIDS-related causes since the beginning of the epidemic, according Read more »
U.S. Centers for Disease Control and Prevention

Despite AIDS Scourge, African Working-Age Population Is Growing

...Washington, the International Monetary Fund (IMF) predicted that despite the toll of HIV/AIDS, sub-Saharan Africa's working-age population is growing and should continue to do so during the coming 40 years. After falling from 5.4 percent in 2004... Read more »
Henry J. Kaiser Family Foundation

Keith Cylar, AIDS Advocate and Co-Founder of Housing Works, Dead at Age 45

...1990 co-founded Housing Works, a "militant" and "community-based" organization that is "often the agency of last resort" for HIV-positive people in New York, according to the Times . Housing Works offers social services, including health care,... Read more »
Henry J. Kaiser Family Foundation

Increase in Commercial Sex Work, Sexual Violence in Kenya Following Violence Will Undermine HIV/AIDS Efforts, AP/ Reports

... Both the number of teenage girls participating in commercial sex work and sexual violence have increased in Kenya following the December 2007 presidential Read more »
Connect With Others


Posted by help290, 1 Reply
...though all this testing is I have been very ill with crazy symptoms and every time I go to the doctor he or she will run another HIV test on me it is not my choice. He also said that I was very vitamin D deficience. So if I am infected with HIV... Read more »

Bush ignores HIV prevention methods that work

Posted by bradford, 2 Replies
...should be forefront in HIV preventative efforts to fight HIV/AIDS. This president has undermined the importance of condom usage and instead, promotes fidelity and abstinence as top priorities. Fidelity and abstinence are known to be of little... Read more »


Posted by Ozarkbuddy, 3 Replies
...On August 29, I was exposed to the HIV virus through a sexual contact. At the time I didn't know the individual was positive as he did not disclose it. Two weeks Read more »

Can you work full time through life with hiv/aids?

Posted by Anonymous, 4 Replies
...and very very large child support obligations. I have talked with my doctors and read about the prognosis of hiv this day and age and can live a fairly normal life. But also read about people on disability and not working. So what I need to... Read more »
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