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90%: There's a period of time after a person is infected during which they won't test positive. This is called the “hiv window period.” The window period can be from 9 days to 3-6 months, depending on the person's body and on the HIV-test that's used. ...Read more
2 weeks exposure to: what? Please clarify & re-ask.Get a more detailed answer ›
Radiation-free test: Elisa is a test that detects a foreign substance (antigen) or an antibody in blood. Elisa uses an enzyme bound to a 2nd antibody . In the final step the enzyme converts indicator material to a different color. The amount of color detected corresponds to the amount of antigen or antibody present. Elisa gives the same answer as rast without using radioactive radioisotopes. ...Read moreSee 1 more doctor answer
If there is a cross- reactivity during an elisa test is it possible to end up with a false negative as a result?
False positives: Cross-reactivity can cause false positives (meaning that the test is positive but the actual substance tested for isn't there). The happens when an antigen (virus, protein or bacterium) is so similar structurally that it reacts with the same antibody that the test is designed for. For example, the antibody test for latex allergy can sometimes cross react with a protein in bananas! Crazy, huh? ...Read more
Had protected sex with sex worker, If i get the ELISA test done after 5/6 weeks of last exposure will the results be accurate if not then which test ?
Accurate : At the time but need to wait 6 months ...Read more
I have heard different estimates on what the viability is for blood that is going to be tested via elisa test. I've heard that you should get the sample tested within 3 days 7 days 14 days and up to 30 days if blood is frozen. What is ideal?
No: If positive, it will be followed up with a confirmatory test. If negative, you are almost certainly okay but if you are very worried you might be able to pay for a pcr assay, which is the gold standard. ...Read more