CDC HIV testing window periods
Lab antigen/antibody test, blood from a vein: usually 18–45 days.
Rapid antigen/antibody fingerstick: usually 18–90 days.
Antibody test: usually 23–90 days.
Why are the ranges different?
Different HIV tests look for different markers. NATs look for the virus itself. Antigen/antibody tests look for HIV antigen and antibodies. Antibody tests look for antibodies made by the immune system. Those markers become detectable at different times.
Does a 15-minute rapid result mean 15-minute detection?
No. Result speed is the time it takes to read the test after the sample is collected. The window period is the time after exposure before the test can usually detect HIV. Those are separate concepts.
What does a negative result during the window period mean?
A negative result obtained too early may need to be repeated. CDC advises testing again after the window period for the test used following a potential exposure.
What if the exposure was within 72 hours?
Rapid testing in Wellington
A Wellington healthcare provider offers rapid HIV testing. If you are unsure which test is appropriate for your exposure timing, tell the clinician when the exposure happened.
HIV testing in Palm Beach County →
Health information on Get Tested PB is written for general education and cross-checked against public-health sources. It is not individualized medical advice.