OraQuick Rapid HIV Antibody Test Window Period
OraQuick (oral-fluid HIV antibody self-test) is designed to produce an accurate result when the test is performed about 3 months after the risk event. [1]
A negative OraQuick result obtained earlier than about 3 months after exposure can reflect the “window period” and does not rule out HIV infection from that exposure. [1]
Time to Detectability After Exposure
The OraQuick window period is about 3 months. [1]
During the window period, antibody levels may be insufficient for the test to detect HIV. [1]
Practical Testing Timeline After a Potential Exposure
A negative OraQuick result obtained less than 3 months after a potential exposure should be followed by repeat testing after a full 3 months has passed since the exposure. [1], [2]
If no additional exposures occur after the initial negative result and repeat testing is negative at the end of the window period, HIV from the prior exposure is not indicated. [2]
Monitored Follow-Up After Nonoccupational PEP
When nonoccupational postexposure prophylaxis (nPEP) is used, follow-up HIV testing is recommended at completion of the nPEP regimen and at a final follow-up visit 12 weeks after exposure. [3]
Interpretation of Results Within the Window Period
A negative OraQuick result during the window period does not indicate that HIV infection did not occur from the exposure. [1], [2]
Test Performance and Specificity
FDA clinical information for the OraQuick in-home test reports an expected performance of 99.98% for specificity (negative when HIV is not present). [1]
Key Clinical Action After a Potential Exposure
HIV postexposure prophylaxis (PEP) should be assessed urgently after higher-risk exposures because PEP initiation is time-sensitive and does not depend on oral rapid antibody testing results. [3]