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Accuracy Of 5 Weeks Hiv Test Using 4th Generation Duo

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Ask the Experts

Accuracy of 4th Generation test after 4 weeks post-PEP

Hi Dr. Weidman,I wonder what is the accuracy of a negative result from a 4th Generation EIA 33 days after completing PEP ( 63 days post-exposure). The risk was: Protected receptive anal sex, performing fellatio without condom without ejaculation,...
Lisa Hightow-Weidman, M.D., M.P.H.

Response from Lisa Hightow-Weidman, M.D., M.P.H.

University of North Carolina
Hello there-Typically 4th generation tests can be presumed to be accurate by 2-3 weeks post exposure. Certainly I would expect it to be accurate at 2 months. To be sure, you could get an HIV viral load test now or repeat the 4th gen at 90 days. My... Read more »

CMIA 4th generation accuracy

hello..how accurate the hiv CMIA combo abbot architect test at 13 week??..with exposure was... 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... Read more »
Articles
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 »
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 »
Henry J. Kaiser Family Foundation

Fourth Adult Film Actor Tests HIV-Positive But Unrelated to Other Three Cases; Bill to Require More Testing Set Aside

A fourth pornographic film actor in California has tested HIV-positive, although the case is unrelated to three other adult film actors who tested positive last month, Reuters reports. A transsexual actor who goes by the stage name Jennifer on... Read more »
U.S. Centers for Disease Control and Prevention

Rapid HIV Testing in Emergency Departments -- Three U.S. Sites, January 2005-March 2006

Approximately one fourth of the estimated 1 million persons living with human immunodeficiency virus (HIV) in the United States are unaware that they are infected with HIV and at risk for transmitting the virus to others. 1 ,2 In April 2003, CDC... Read more »
Connect With Others

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 »

Negative result 3 week post exposure?(4th gen duo)

Posted by anxious66, 1 Reply
Hi my risk as mentioned before was unprotected oral (MSM) giving, no ejaculation was for about a minute... divided in 3 times.. so about 20 seconds each time.

took a hiv duo 4th gen test 3 weeks and a few days post exposure, with a negative result.... Read more »

Where can I get a 3rd or 4th generation test

Posted by pal13, 2 Replies
I was involved in a risky behaviour 10 weeks back. Got tested with rapid antibodies test at 10 weeks. DNA by PCR 4 weeks and 7 weeks. negative. I'm still worried as the person I was involved with is from SE Asia. And that region has different... 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 »