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HIV test result negative after 17 days of contact. Is it accurate?

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I took an p24 hiv test 17 days after the suspicious contact. The test was negative. Should i take it again? Is it accurate?
Posted Thu, 19 Apr 2012 in HIV and AIDS
Answered by Dr. P V S Prasad 9 hours later
Thanks for your query.

The levels of p24 antigen increase after one to three weeks of infection. Therefore if you wish you may check once more at 21-28 days. The test is fairly accurate to detect early infection.

Hope I have answered your query. Please accept my answer in case you do not have further queries.

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