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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Is An HIV Combo Test With P24 Antigen Screening After 34 Days Since Exposure Conclusive?

I had a protective insertive vaginal sex with CSW i wear a condom. But even i am worried i did rapid hiv mylan test for me and for her it was negative after 34 days. Also i did hiv combo test with p24 antigen screening after 34 days for me also it was negative. I’ am an obsessed person. Do i still need to be worried ? Or do further tests ? Are my tests conclusive ?
Mon, 4 Mar 2024
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General & Family Physician,  's  Response
Hi,

HIV combo test is very precise test, which can detect presence of HIV infection at an early stage. It detects antibodies against both HIV 1 and 2 as well as presence of HIV 1-p24 antigen. It can detect infection as early as in 2 weeks, in some of the cases. However, in other cases, the test may be positive only after a longer period up to 45 days. As there is longer window period, in some of the cases, therefore a negative test at least after 45 days of suspected infection should be considered as negative reliably.

Take care. Hope I have answered your question. Let me know if I can assist you further.

Regards,
Dr. Satnarain Bansal, General & Family Physician
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Is An HIV Combo Test With P24 Antigen Screening After 34 Days Since Exposure Conclusive?

Hi, HIV combo test is very precise test, which can detect presence of HIV infection at an early stage. It detects antibodies against both HIV 1 and 2 as well as presence of HIV 1-p24 antigen. It can detect infection as early as in 2 weeks, in some of the cases. However, in other cases, the test may be positive only after a longer period up to 45 days. As there is longer window period, in some of the cases, therefore a negative test at least after 45 days of suspected infection should be considered as negative reliably. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Satnarain Bansal, General & Family Physician