I've been really worried about the window period for HIV testing. I got tested after 140 days, and my result came back non-reactive. I'm wondering if that means Im definitely in the clear, or if there's a more accurate test I should consider for better peace of mind. Could you shed some light on the best test option for HIV detection?

Dr Ibrahim Salah

General Practitioner

• MBBS
• 2+ Yrs

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The window period for HIV testing varies depending on the type of test used, ranging from 10 to 90 days. For a non-reactive result after 140 days, it's likely that the test has detected the absence of HIV antibodies and antigens, indicating a negative status. The best test for HIV detection is the 4th generation antibodyantigen test, which can detect 99% of samples within 45 days. However, if you're still concerned, consider a nucleic acid test (NAT), which can detect HIV within 10-33 days.

Answered 25/07/2025