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In general, antibody tests that use blood can detect HIV slightly sooner after infection than tests done with oral fluid. It can take 3 to 12 weeks (21-84 days) for an HIV-positive personâs body to make enough antibodies for an antibody test to detect HIV infection. This is called the window period.
Depending on what types of HIV tests are available at clinics or testing sites near you, it is possible to have test results back in as little as 15 or 20 minutes or as long as about 2 weeks after testing. To learn more about testing options in your area, call 1-800-CDC-INFO, which is 1-800-232-4636.