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Aug 29, 2001

Hello, I got pinched with a needle one week ago, my dr. made me take a antigen test which came out negative , now I am waiting for the results for a viral load test he told me to take, how accurate are these? if both come out negative is this a good sign? What test should I take next and when?

Response from Mr. Kull

Having negative results on these tests are a good sign, but it is important to follow up with an antibody test at least three months after your exposure. While these tests can be useful, they are not as specific and/or sensitive as the antibody tests and will yield different results depending on the stage of infection. See my responses to:

"Accuracy and timing of PCR tests" (

"What's the difference" (


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