Elisa 4th Generation Window Period

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Ask the Experts

About an answer given on Nov 19th

Doctor, about an answer posted on November 19th (4th generation ELISA and WB). You told me ELISA does not pick up HIV antibodies before WB. But, at the 3 month mark I got a strongly reactive 4th generation ELISA (WB yet to be done). So, I guess...
Robert J. Frascino, M.D.

Response from Robert J. Frascino, M.D.

The Robert James Frascino AIDS Foundation
Hi,You're kidding, right? Please tell me you're kidding.Dr. Bob Read more »

Please Doctor, help me I'm crazy.

Dear Dr Bob. First of all let me tell you something. I was very moved by your response and for... Read more »

Window Period

Dear Doctor Bob, so much has been said about window period and I know it is a tough issue to be... Read more »
San Francisco AIDS Foundation

HIV Testing

... ELISA Western Blot (WB) Assay Indirect Immunofluorescence Assay (IFA) WindowPeriod Interpretation of Test Results Accuracy of Antibody Tests Anonymous HIV Testing ... Read more »
AIDS InfoNet

HIV Testing

...with HIV, it usually takes from three weeks to two months for your immune system to produce HIV antibodies. During this "windowperiod" you can test negative for HIV even if you are infected. If you think you were exposed to HIV, you should wait... Read more »
The Well Project

What Is HIV?

...is because the immune system can take anywhere from two to eight weeks to make antibodies. If you are tested in this "windowperiod," you may get an unclear result or a false negative. There is another type of test called the RNA test, which... Read more »
Test Positive Aware Network

The Feminization of an Epidemic

...same age group. The threat of death from HIV/AIDS remains high in older African American women as well: AIDS is the 3rd and 4th leading causes of death in black women ages 35-44 and 45-54 years old, respectively. 4 Clearly, the rising rates... Read more »
Connect With Others

3rd gen ELISA and window periods???

Posted by jambo, 1 Reply
...I know everyone is tired of these repeated discussions on windowperiods. I came across an article which mentioned that fourthgeneration tests reduce the windowperiod by an average of 6 days over Read more »

US DEPT of Health - window period

Posted by Anonymous, 1 Reply
...more sensitive third-generation EIAs, which may be positive within 1 week of peak antigen levels, suggest that the "window" period with current tests is substantially shorter (3-4 weeks).25,25a Specificity of EIA is above 99.5% with most tests.... Read more »

3rd or 4th generation elisas?

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

Elisa Generatgion and window

Posted by Anonymous, 1 Reply
...Does anybody know the differences between the various generations of Elisa and how it might affect the windowperiod for testing? Read more »