When do STIs show in tests?

Clinicians often refer to ‘window periods’ when testing for STIs. This means the length of time it takes from catching an infection to it showing up on a test. The window periods for the tests we use are shown below.

Windows diagram

If you think you may have been exposed to an STI we recommend you test 4 weeks after exposure to cover window periods for chlamydia, gonorrhoea and HIV.

However, if you believe you may have been exposed to HIV in the last 72 hours, we would recommend seeking immediate advice on receiving PEP.

If you order multiple tests within a short period of time one of our clinical team may contact you to discuss (we discourage and often block repeat orders that we receive within a short period of time to prevent unnecessary testing).