Hepatitis B: HB Surface Antigen

HBsAg (Hepatitis B surface antigen) is a key laboratory marker used to identify the presence of an active hepatitis B virus infection. A positive result indicates current infection, which may be acute or chronic depending on clinical context and additional serological findings.

The findings related to these particular clinical tests are a general guide and do not cover every possible scenario, this is because every patient is unique and these results only have true clinical significance when combined with the patient’s full medical history, a physical exam, and other diagnostic findings.

Phlebotomy service fee: £21.