Q&A HIV | DrSafeHands
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Is HIV 1, 2, and p24 combo CMIA test index value of 0.05 (negative) reliable at 20 days post-exposure? Do I need to retest at 30 or 45 days?

Answer requested by Tushar Mittal Hi Tushar. Thanks for your query. The HIV 4th gen test is considered highly accurate after 28 days of potential exposure. After 45 days, as per CDC guidelines, it can be taken as conclusive. To answer your specific query, the p24 antigen becomes detectable in the blood after 2 to 3 […]