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4th Generation Elisa 6 Months Conclusive

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4th generation ELISA test accuracy

Hi Dr Wohl,Thank you for the wonderful work you are doing!I am bit confused regarding the type of test to take and their respective window periods. It seems that the antibody test after 3 months has been the standard, but I have been reading that...
David Wohl, M.D.

Response from David Wohl, M.D.

University of North Carolina - Chapel Hill
The p24 component of this test turns positive in about t a week after infection. Therefore, at 5 weeks a negative test is very reliable. DW... Read more »

4th generation ELISA and WB

Dear doc, I have sent you this question before but got no answer. Would a 4th generation ELISA pick... Read more »

4th generation tests

Hello Dr.Bob.I am the guy from Izmir, Turkey.I have asked this question before but you havent... Read more »
The AIDS Institute

The AIDS Institute Supports the 4th Annual National Gay Men's HIV/AIDS Awareness Day "Because We Matter"

Washington, D.C. -- In recognition of the fourth annual National Gay Men's HIV/AIDS Awareness Day (NGMHAAD) , The AIDS Institute (TAI) pauses to remember the enormous toll HIV/AIDS has historically taken and continues to take on gay men. We... Read more »
U.S. Food and Drug Administration

Fourth Generation HIV Diagnostic Test Approved, Permitting Earlier Detection of Infection

On June 18, 2010, FDA approved a new, "4th generation" HIV diagnostic assay. The ARCHITECT HIV Ag/Ab Combo Assay is the first HIV diagnostic assay that simultaneously detects both antigen and antibodies for the Human Immunodeficiency Virus (HIV).... Read more »
HIV i-Base

Third- vs. Fourth-Generation HIV Testing: Almost Half of UK Clinics Out of Step With National Guidelines

In 2011, prompted by calls to the i-Base phoneline reporting wide diversity in the information given to people contacting GUM clinics for HIV testing, i-Base wanted to understand why this was often different to UK guidelines. Although 4th generation... Read more »
Test Positive Aware Network

The Next Generation of Human Growth Hormone

Every Tuesday night for three years I drove to Beverly Hills, sat in a room, and listened to five other middle-aged men discuss their lives. I didn't expect group therapy to last for years. With every passing season, we all got a little older: a few... Read more »
Connect With Others


Posted by guasonch, 2 Replies
Hi today ive received my third elisa at the 9th month. Its negative but im scared because ive been consuming antidepressants, but 48hs before the elisa i stopped taking them. Before the blood drawn, the man asked me if i was taking any drugs and i... Read more »

4th Generation HIV Test

Posted by Trophy

An arsenal of laboratory methods are available to screen blood, diagnose infection, and monitor disease progression in individuals infected by HIV. These tests can be classified into those that: (a) detect antibody, (b) identify antigen, (c) detect... Read more »

3rd or 4th generation elisas?

Posted by Anonymous, 1 Reply
I was wondering if any county health dept. around the country would be using elisas first generation. Is everyone using 3rd or 4th generation? 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 »