How long does an STI test result take? Usually you have your result within 2 to 5 working days after the lab receives your sample. A PCR test for chlamydia or gonorrhoea is often fastest, a blood test for HIV or syphilis can take a little longer. So the waiting time depends on the method, not on chance.
Many people mix up two things: the time you have to wait before you can test, and the time the lab needs for the result. Those are two different things, and that distinction causes most of the confusion.
How long does an STI test result take?
An STI test result usually takes 2 to 5 working days from the moment the laboratory has your sample. The analysis itself is quick, but transport, processing and checking take time. With a home test, the postage to the lab adds to that, often an extra day.
You typically get a message once your result is ready, after which you log in securely online to view it. So you don't have to keep checking yourself.
Why does the waiting time differ per test?
The waiting time differs because not every STI is examined with the same method. A PCR test looks for the DNA of a bacterium and is fast. A blood test looks for antibodies or antigens and sometimes needs an extra confirmation step for an abnormal result.
Below you see the usual turnaround times per method, counted from the lab receiving your sample.
- Chlamydia and gonorrhoea (PCR, urine or swab) - usually 1 to 3 working days
- Trichomonas and mycoplasma (PCR) - 1 to 3 working days
- HIV and syphilis (blood test) - 2 to 5 working days
- Hepatitis B (blood test) - 2 to 5 working days
A positive or unclear result is often confirmed with a second method before you see it. That costs a few extra days, but it prevents a wrong conclusion.
The difference between window period and results time
The window period and the results time are often confused, but they are two separate waits. The window period is the time after a risk contact when an infection isn't yet reliably detectable. The results time is the time the lab needs after you've handed in the sample.
An example makes it clear. If you test for chlamydia 5 days after unprotected contact, you're still inside the 2-week window period, and the result can be a false negative, even though it's ready quickly. The result is on time, but taken too early. Soa Aids Nederland describes these testing moments per STI (soaaids.nl).
Our tip: schedule your test at the right point in the window period, then a fast result is also a reliable result.
What does a negative or positive result mean?
A negative result means the infection wasn't found at the moment of testing. If you tested on time, so after the window period, that's a reassuring and reliable result. If you tested too early, a negative result can still be wrong.
A positive result means an infection was found. That can be a shock, but almost all STIs are highly treatable. Chlamydia, gonorrhoea, syphilis and trichomonas are fully cured with antibiotics, and HIV is excellently manageable with modern medication. RIVM stresses that early detection and treatment help prevent complications (RIVM).
How do you receive your result safely?
Your result arrives in a secure online environment only you can open with your personal login. It isn't automatically shared with your GP, employer or health insurer. You decide whether and with whom you share it.
We take it as a given that your result stays private. With a positive result you also get clear information on next steps, so you don't just have a result, but also know what to do with it.
Waiting for your result? How to know where you stand
An STI test result usually takes 2 to 5 working days, with PCR tests on the fast side and blood tests a little longer. The key lesson: a fast result is only reliable if you tested at the right moment. Not sure whether you could test yet, read when testing without symptoms is worthwhile. Want to test at your own pace, see how an at-home STI test works.
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