Elisa 4th Generation Window Period

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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 »

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 »

Eliza 4th generation

Posted by Anonymous, 1 Reply

The new Eliza 4th generation test tests for both antibodies and the virus itself. I don't know whether its already released to the general public. Anyway, a person testing negative for both after 30 days is considered hiv negative.No further tests... Read more »

Elisa 4 generation Window period in Spain

Posted by Anonymous, 1 Reply

I tell you what she has said to me the doctor here in Spain brings over of the Elisa 4 generation (is a test of antibodies vih-1, vih-2 of 3 generation combined with a test of the antigen p24 ), has said to me that it is very sure from the first... 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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ELISA 4th GENERATION and PEP and ODDS

Dear David,First of all, thank you for your time.I would like to know how good is a non-reactive result after 55 days post-exposure (week 8) or 25 days after finishing PEP? I had an anal insertive intercourse but the condom broke. I have noticed it...

Response from David Wohl, M.D.

University of North Carolina - Chapel Hill

You are correct that this combo test is very reliable and that if you were infected the test would reveal it. You can stop worrying.DW... Read more »

SANCTITY OF 4th GENERATION TESTS,PLEASE REPLY.DONATION AS PROMISED!!

Dear Doctor,I really want to ask that if the person really have to be tested at 3 months mark then what is the sanctity of 4th Generation Tests claiming to be exponentially reducing the window period?Then even today also one is relying on 3rd...

Response from Robert J. Frascino, M.D.

The Robert James Frascino AIDS Foundation

Hello AS,There is no "sanctity" of fourth generation tests or DUO tests. I have no doubt that improvements in HIV testing are increasing the accuracy of diagnostic testing and shortening the window period. However, I base my responses on... Read more »

4th generation test

Dr Bob,first of all you are a great brave man. now to my case: i had unprotected sex with a woman with unknown hiv status, 35 days later i got tested with a 4th generation hiv eia test (HIVcombi detect antibody and the antigen p24)and it was...

Response from Robert J. Frascino, M.D.

The Robert James Frascino AIDS Foundation

Hello Scared Boy,I wish I could give you an all-clear definitive WOO-HOO, but I can't. We just don't have enough data to say that a negative EIA combined with a p24 antigen test at 35 days is conclusive. For a definitive result,... Read more »

Testing - 4th genration window

Is the window still 6 months for 4th genration tests? Is the Home Access Express 4th generation? Separate topic: If I'm still in the window for ELISA (I'm at 3-4 months, and hearing that 6 is the window), specifically what other test is...

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

Stanford University, School of Medicine

4th generation tests are usually referred to those that combine antibody and p24 antigen testing in the same test. HomeAccess only detects antibodies to HIV-1.... Read more »

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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 »

The 4th International Workshop on HIV Drug Resistance and Treatment Strategies

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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 »

Protecting a New Generation from AIDS

The AIDS epidemic is quickly becoming a crisis of America's youth. Today, half of the 40,000 new HIV infections each year are among people under 25. The advent of new protease drugs in the mid-1990s ended the automatic death sentence previously... Read more »

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