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How accurate is Alere HIV test?

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How accurate is Alere HIV test?

Results. Reference testing yielded 97 positives for HIV infection and 36 negative samples. Sensitivity of the Alere test was 95\% (88–98\%), while the SD Bioline sensitivity was 91\% (83–96\%). Both assays showed 100\% (90–100\%) specificity.

How early can Alere Determine detect HIV?

Timeframe for Alere Determine™ HIV-1/2 Ag/Ab Combo ONLY: Antigen can be detected 14-15 days after infection (Acute Infection). Antigen and antibodies can both be detected 21-28 days after infection (Early Infection).

How accurate is a rapid HIV test after 3 months?

Up to 95\% of people will have antibodies after 6 weeks, and 99\% of people will have antibodies after 3 months. The point-of-care (or rapid) HIV test is an antibody tests offered in some locations in BC.

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What does AG AB mean?

It is now common for antibody tests to also test for antigens. These are called 4th generation tests or combined antibody/antigen (Ag/Ab) tests. In these tests the antigen being tested is a major HIV protein called p24. p24 (short for protein 24) is produced 2–3 weeks after infection and before antibodies are produced.

How soon after an exposure to HIV can you get results?

With a rapid antibody screening test, usually done with blood from a finger prick or with oral fluid, results are ready in 30 minutes or less. The rapid antigen/antibody test is done with a finger prick and takes 30 minutes or less. The oral fluid antibody self-test provides results within 20 minutes. How soon after an exposure to HIV can

What happens if my HIV test results are negative?

If you get an HIV test after a potential HIV exposure and the result is negative, get tested again after the window period. Remember, you can only be sure you are HIV-negative if:. You haven’t had a potential HIV exposure during the window period. If you do have an exposure, then you will need to be retested.

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How long does it take to develop antibodies to HIV?

Most people develop detectable levels of antibodies within 3 to 12 weeks after contracting HIV, but it may take longer for some people. Some HIV antibody tests are performed on blood drawn from a vein. To perform this type of antibody test, a healthcare professional may draw a sample of blood and send it to a lab for analysis.

Can the Alere determine HIV test detect p24 antigen?

Most rapid tests, with the exception of the Alere HIV Combo and Alere Determine HIV-1/2 cannot detect p24 antigen. The accuracy of point-of-care tests is not always equal to those of laboratory tests, especially in relation to recent infection. This is for two main reasons:

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