A rapid card test that detects hepatitis B surface antigen (HBsAg), a protein on the hepatitis B virus.
Screens for hepatitis B infection — in pregnancy, before surgery or dialysis, for blood donation and in people with jaundice or raised liver enzymes.
Fever, rash, jaundice, suspected exposure to infection, before surgery or pregnancy, as advised by a doctor.
No fasting needed.
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Yes. An effective vaccine is available; ask your doctor if you are not vaccinated.
No fasting is needed. You can eat and drink normally unless your doctor has advised otherwise.
Usually a blood sample; for some infections a swab, CSF, urine or other sample is used — as advised by your doctor.
Usually within 10–34 hours after the sample reaches the lab. You will receive the report online.
