4th Generation Elisa 6 Months Conclusive

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4th generation ELISA and WB

Dear doc, I have sent you this question before but got no answer. Would a 4th generation ELISA pick antibodies before Western Blot? In your opinion,up to what phase of the HIV infection could a 4th gen ELISA be positive or indeterminate and the...
Robert J. Frascino, M.D.

Response from Robert J. Frascino, M.D.

The Robert James Frascino AIDS Foundation
...positive ELISA followed by a negative WB is considered a negative HIV screening test. HIV-antibody tests taken prior to the three-month mark are not considered definitive or conclusive. Consequently, your negative HIV screening test (positive... Read more »

PEP Question

Dear Doc JoeWhere to start, I had unprotected oral and protected anal sex with a guy of unknown... Read more »

This is the only place that can help me!

Hello Dr. Bob,I did the stupidest thing in my life and had unprotected sex with someone I later... Read more »
AIDS InfoNet

HIV Testing

...tested regularly for HIV . When Should I Get Tested? If you are infected with HIV, it usually takes from three weeks to two months for your immune system to produce HIV antibodies. During this "window period" you can test negative for HIV... Read more »
San Francisco AIDS Foundation

HIV Testing

...after HIV antibodies are confirmed by a Western Blot test , can determine if the HIV infection is recent (within the last six months), which may be useful for deciding upon possible early treatment options. Western Blot (WB) Assay The WB... Read more »
AIDS InfoNet

Zidovudine (Retrovir, AZT)

...Zidovudine greatly reduces transmission of HIV from the mother to her child. It is given to HIV-positive pregnant women from the 4thmonth of pregnancy until their baby is born, and to the newborn baby for 6 weeks. What About Drug Resistance?... Read more »
AIDS InfoNet

Viral Load Tests

...load a few days after HIV infection. This is better than the standard HIV (antibody) test, which can be "negative" for 2 to 6months after HIV infection. (See Fact Sheet 102 for more information on HIV antibody testing.) For prognosis , viral... Read more »
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Russian ELISA

Posted by Anonymous, 3 Replies
...used at clinics in Moscow? I'm here on business, but didn't have enough Russian to ask about the test. I tested neg 2 and 3 months after possible exposure (one-time, I think medium risk). but if they were using an older generation test this... 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 window period for testing? Read more »

Elisa-testing in the Netherlands

Posted by Anonymous, 1 Reply
...modern clinics use already 4thgeneration, but this test is not yet fully accepted. Conclusion : When someone tests negative 3 months after an sex. exposure, this is conclusive. Exception : Rare cases in where people test negative after 3 months... Read more »

Massachusetts testing window

Posted by Anonymous, 2 Replies
...through a series of chemo I am 110% negative. but I dont know what to think!! You still here of people testing pos. after 3 months correct??!! Any opinions would be of great help to me. thanks! Read more »
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