Blood Tests
Sexual Health & Infection Blood Tests in Croydon
Confidential blood tests for HIV, syphilis and hepatitis B and C, plus hepatitis B immunity checks for work or travel. Results in 1–3 days.
- Results in 1–3 days
- No GP referral needed
- 15-minute appointment
- Clear, easy-to-understand report
Sexual Health & Infections: tests and prices
Hepatitis B Antibody (HBsAb) Blood Test
Confirms your immunity to hepatitis B after vaccination or past infection. Often needed for healthcare, dental and other jobs.
Measures: Hepatitis B surface antibody (anti-HBs)
£70
BookHepatitis B Antigen (HBsAg) Blood Test
Detects hepatitis B surface antigen, the marker of a current hepatitis B infection. Used for diagnosis and occupational screening.
Measures: Hepatitis B surface antigen (HBsAg)
£70
BookHepatitis B Core Antibody (HBcAb) Blood Test
Shows whether you’ve ever had a hepatitis B infection, in the past or now. Vaccination doesn’t affect this result.
Measures: Hepatitis B core antibody (anti-HBc)
£70
BookHepatitis C Antibodies Blood Test
Screens for exposure to the hepatitis C virus, a treatable infection that often causes no symptoms for years.
Measures: Hepatitis C antibodies
£70
BookSyphilis (RPR) Blood Test
Screens for syphilis, a bacterial infection that is increasingly common in the UK and easily treated with antibiotics.
Measures: RPR, Treponemal antibodies
£70
BookHIV Blood Test
A fourth-generation HIV test that detects both antibodies and the p24 antigen, for early and accurate diagnosis.
Measures: HIV-1 and HIV-2 antibodies, HIV p24 antigen
£79
Book
Testing at the right time
Every infection has a “window period” between exposure and when a test can reliably detect it. Testing too early can give a false reassurance:
- HIV: our fourth-generation test detects most infections from 4 weeks, and a negative result 45 days after exposure is considered conclusive.
- Syphilis: most infections show within 6 weeks; a repeat test at 12 weeks confirms a negative result.
- Hepatitis C: antibodies can take up to 3 months to appear.
If you think you’ve been exposed to HIV in the last 72 hours, go to a sexual health clinic or A&E straight away and ask about PEP, which must be started quickly.
Hepatitis B tests explained
- Hepatitis B antibody (anti-HBs) checks you’re immune, for example after vaccination for work.
- Hepatitis B antigen (HBsAg) looks for a current infection.
- Hepatitis B core antibody (anti-HBc) shows a past or current infection.
Frequently asked questions
Are sexual health tests confidential?
Yes. Your results are private and are only shared with you, unless you ask us to send them to someone else.
Book your sexual health & infections test in Croydon
Results in 1–3 days in a clear, easy-to-understand report. No GP referral needed.