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A member asked:

Hiv ab test 7 weeks accurate??

A doctor has provided 1 answer

HIV: Antibody testing is accurate if you have formed antibodies by that time. There are some people who have a delay in antibody response and therefore testing at 3 months is recommended and some doctors will repeat this at 6 months. If you want immediate reassurance you can get a PCR for HIV RNA. Good luck.

Answered 9/13/2014

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HIV 1/2 AG/AB is negative 7 weeks after potential exposure. Should I wait until 3 months? When is this test the most accurate?

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I had an hiv mixed ag/ab detection test 4 weeks after exposure. Is this accurate ? It came back negative.

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A nurse informed me that the HIV ab/ag test is only 90% accurate at 6 weeks and 99 to 100% accurate at 3 months. Are you familiar with these statistics? I thought the 4th generation test was 99% accurate at 45 days and therefore, conclusive?

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Is a 4th gen ab/ag hiv test accurate after 21 days of exposure or what % of accuracy i can expect from it as many doctors say 4th gen is Reliable after 28 days?

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