References UK clinical guidance from the NHS, the British HIV Association (BHIVA), and the British Association for Sexual Health and HIV (BASHH). Last updated: April 2026.
Waiting for STI test results can feel nerve-wracking, but understanding what to expect helps. Results typically arrive within a few days for lab tests, or within minutes for rapid tests. Most results come back negative, and even positive results are almost always treatable. Here’s a practical guide to what happens.
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How Results Are Delivered
| Service | How You Get Results |
|---|---|
| NHS sexual health clinic | Text, phone, secure app or in-person |
| Home test kit | Text, email or secure online portal |
| GP surgery | Phone, NHS app or in-person |
| Private clinic | Email, phone or secure portal |
What Results Mean
Negative
No infection detected. This is reliable if you tested outside the window period. If you tested too soon after exposure, retest at the appropriate time.
Positive (or Reactive)
Infection detected. The clinic will contact you to arrange treatment. Most STIs are easily treated.
Indeterminate or Equivocal
Unclear result — usually needs retesting or a follow-up test. Not a cause for alarm.
Invalid
Something went wrong with the sample or test. Retest with a new sample.
When to Expect Results
- Rapid tests — 15-30 minutes
- Clinic lab tests — usually 2-5 days
- Home postal kits — 5-10 days total (including post)
If Results Are Negative
- Reassurance that you’re clear (past the window period)
- Continue regular testing if sexually active
- Consider PrEP if at ongoing risk for HIV
- Use condoms and vaccination as appropriate
If Results Are Positive
- Don’t panic — most STIs are easily treatable
- The clinic or service will contact you with next steps
- Attend any follow-up appointments
- Start treatment promptly
- Avoid sex until treatment is complete (usually 7 days)
- Inform recent partners so they can test and be treated
Emotional Side
Positive results can be difficult to process. Sexual health services offer counselling and peer support. Remember that most STIs are manageable, and modern medicine makes outcomes much better than in the past.
Partner Notification
If positive, partners from recent months should be notified. Clinics can help with this confidentially — they can contact partners for you without revealing your name.
Confidentiality
All UK sexual health services protect your results. They won’t be shared with your GP, family, employer or insurer without your consent.
Read more: What reactive means | Result timelines | Test accuracy
Frequently Asked Questions
How long does it take to get results?
Minutes for rapid tests, days for lab tests, 5-10 days for postal kits.
What if I don’t hear back?
Always follow up. Don’t assume “no news is good news.”
Are positive results definite?
Reactive results are usually confirmed with a second test before treatment begins, especially for HIV.
Related reading
- How Accurate Are Rapid HIV Tests?
- Anonymous STI Testing: What It Means
- Are HIV Tests Accurate If You're on PrEP, PEP or ART?
- Are STI Blood Tests Accurate?
- Before You Get Intimate: Why You Should Ask About STI Testing
Sources
- NHS — Sexual health conditions
- BASHH — UK clinical guidelines for STI management
- British HIV Association (BHIVA) — HIV treatment guidelines
- Terrence Higgins Trust — sexual health information
- UK Health Security Agency — STI surveillance data
Steve Page is a recognised expert on Sexually Transmitted Diseases (STDs) and STD treatments, having published numerous articles in peer-reviewed journals and presented his research at conferences around the world. He has an in-depth understanding of the latest medical research on STDs, and is an advocate for the development of new treatments and protocols to improve the health of those affected. In addition to his research, he has dedicated his career to understanding the causes and symptoms of STDs, as well as how to best treat those impacted.
