What it measures
- Hepatitis B core antibody (anti-HBc)
Who it’s for
- Working out whether your immunity comes from vaccination or past infection
- Screening before some medical treatments
- Possible past exposure to hepatitis B
Vaccine or past infection?
The hepatitis B vaccine only teaches your body to make surface antibodies (anti-HBs). Core antibodies (anti-HBc) are made only after a real infection. So if you’re immune, this test shows whether that immunity came from vaccination or from an infection you’ve cleared.
Before some medical treatments
Hepatitis B can become active again during chemotherapy and some immune-suppressing or biologic treatments. Doctors often check core antibodies first, so they can monitor or treat you if needed.
How to prepare
- Drink a couple of glasses of water beforehand: it makes the sample quicker and easier to take.
- No fasting needed. Eat and drink as normal.
How it works at our Croydon clinic
Book online
Choose your test and a time that suits you. No GP referral needed.
A 15-minute visit
A trained clinician takes a small blood sample at 169 Shirley Road, Croydon. Tell us if you’re nervous.
Results in 1–3 days
A clear report showing each result against its reference range.
Next steps
Share your report with your GP, who can arrange NHS follow-up if anything needs it.
Questions
What does a positive result mean?
That you’ve had hepatitis B at some point. It doesn’t show whether the infection is still active, so it’s usually read alongside a surface antigen (HBsAg) test.
Which hepatitis B test do I need?
For immunity: surface antibody. For current infection: surface antigen. To find out whether you’ve ever been infected: core antibody. Call us if you’re not sure.
How much is a Hepatitis B Core Antibody in Croydon?
£70 at our clinic at 169 Shirley Road, Croydon, including taking your blood sample and your report.
How quickly will I get my results?
Usually within 1 to 3 days, in a clear report showing each result against its reference range.