What is the HIV window period?

The window period is the time before a test can reliably detect HIV. This timeline matters because HIV RNA rises first, p24 antigen follows, and antibodies rise later depending on the specific test you take.

When is an HIV test result conclusive?

Conclusive checkpoints depend heavily on the type of test administered. A 4th gen blood test is generally conclusive at 45 days, NAT is conclusive at 33 days, while rapid fingerstick and oral antibody tests are conclusive at 90 days.

HIV Testing Tracker

HIV Testing Window Period Tracker

Know Exactly When Your Test Is Valid

> INIT: Select your test type and days since exposure.
> PROCESSING: We will map your exact position against the timeline of HIV RNA, p24 antigen, and antibodies to give you a clear next step.

[SYS_ALERT] For the best view, rotate your phone to landscape (turn it sideways).

Step 1: Choose your test, Step 2: Enter your day

These two inputs drive everything below, the chart highlight and the clinical interpretation.

Test Administered

Pick the test you actually took, this will highlight the correct window on the chart.

Earliest: 18d Reliable: 28d Conclusive: 45d

Days Since Exposure

Days it has been since the encounter.

Analysing...

Adjust the inputs above to see your status.

Clinical Interpretation

TEST 4th Gen DAY 28 WINDOW E18 / R28 / C45

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