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How long does HIV take to show up on a test, after a first infection?

3 doctors weighed in
Dr. Daniel Lee
Internal Medicine
2 doctors agree

In brief: Average is 25 days

After an exposure to hiv, most people (if they become hiv-positive) will develop antibodies that can be detected by HIV tests sometime between 2 to 8 weeks with the average of 25 days.
97% will develop detectable antibodies within 3 months and the rest may develop antibodies as late as 6 months (though very rare). This is why we typically recommend repeating HIV tests every 6 months if at risk.

In brief: Average is 25 days

After an exposure to hiv, most people (if they become hiv-positive) will develop antibodies that can be detected by HIV tests sometime between 2 to 8 weeks with the average of 25 days.
97% will develop detectable antibodies within 3 months and the rest may develop antibodies as late as 6 months (though very rare). This is why we typically recommend repeating HIV tests every 6 months if at risk.
Dr. Daniel Lee
Dr. Daniel Lee
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