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.
Home herpes tests let you check for herpes simplex virus (HSV) in privacy. They come in two main forms: blood tests that detect antibodies to HSV-1 or HSV-2, and swab tests that detect the virus directly from a suspected lesion. Each type has its place, and both have limitations you should know about before testing.
Here’s what to know.
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Two Types of Herpes Test
| Test Type | What It Detects | When to Use |
|---|---|---|
| Blood antibody test | Past infection with HSV-1 or HSV-2 | No current lesion but you want to know if you’ve been exposed |
| Swab (NAAT/PCR) | The virus itself on an active lesion | You have a blister or sore to swab |
Blood Antibody Tests
These detect antibodies your body produces after HSV infection. They can distinguish between HSV-1 (typically oral cold sores) and HSV-2 (typically genital herpes), though both types can occur in either location.
Limitations
- Antibodies take weeks to months to develop after infection
- A positive result means past exposure but doesn’t tell you where the infection is or whether you’ll ever have symptoms
- Most adults are HSV-1 positive — a positive result is common and often from childhood exposure
- False positives can happen, particularly at low antibody levels
- Not part of routine STI screening in the UK because of these issues
Swab Tests
Swab tests using PCR or NAAT detect the virus directly from an active lesion. They are highly accurate when a lesion is present and fresh.
Limitations
- Only work if a visible blister or sore is present
- Become less accurate as lesions heal
- Can’t tell you about past infection without current symptoms
Should You Test?
Herpes testing without symptoms is controversial. The UK sexual health community generally does not recommend routine blood antibody testing because:
- A positive result can cause distress without changing management
- It doesn’t tell you if you’re likely to have an outbreak
- Treatment decisions are based on symptoms
- False positives are possible
Testing is more useful when:
- You have a visible lesion (use a swab)
- Your partner has been diagnosed and you want to know your status
- You’re planning pregnancy and want to assess risk
- You’re entering a new relationship and want honest disclosure
What to Do with Your Result
- Positive swab: Confirms current herpes. Speak to a sexual health clinic about treatment and management.
- Positive blood test: Indicates past infection. Speak to a clinician to understand what it means for you.
- Negative test: Doesn’t rule out herpes entirely if the test was too soon after infection. Retest if you have concerns.
Read more: What is herpes? | Home HIV testing | Rapid test accuracy
Frequently Asked Questions
Are home herpes tests reliable?
Swab tests on active lesions are very reliable. Blood antibody tests are less useful because of false positives and uncertainty about what a positive result means in practice.
Should I get tested if I have no symptoms?
In the UK, routine herpes testing without symptoms is generally not recommended. Discuss with a sexual health clinician if you’re unsure.
Can my partner and I test together to know if we both have it?
Yes. This can help with informed decisions, though the results need careful interpretation.
Related reading
- Comprehensive Test: Chlamydia, Gonorrhoea and Herpes
- Herpes Blood Test: What It Shows
- Herpes Early Detection Testing
- Herpes PCR Test
- Lab Test for Syphilis and Herpes
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.
