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.
HIV testing is quick, confidential and free on the NHS. Modern tests are highly accurate and can detect HIV from as early as 4 weeks after exposure. Options include clinic-based tests, home kits and rapid point-of-care tests. Testing is the only reliable way to know your HIV status.
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Test Types
| Test | What It Detects | Reliable From |
|---|---|---|
| 4th-gen lab test | Antibodies + p24 antigen | 4 weeks |
| Rapid self-test | Antibodies | 3 months for definitive |
| HIV RNA (viral load) | Virus genetic material | 10-14 days |
Where to Test
- NHS sexual health clinics — free
- Home test kits — free in many areas
- GP surgery
- Community testing events
Who Should Test
- Everyone at least once
- After each new partner
- MSM every 3 months
- After any high-risk exposure
If You Test Positive
- Confirmation testing
- Link to HIV care
- Start treatment (often same day)
- Near-normal life expectancy
- U=U with effective treatment
Read more: Home HIV testing | Window period | What reactive means
Frequently Asked Questions
Is HIV testing confidential?
Yes — results are protected.
How soon can I test?
4 weeks for a reliable 4th-gen lab test.
Is testing free?
Yes through NHS services.
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.
