What is this test?

➤ HBsAg (Hepatitis B virus surface antigen), also known as the Australian antigen, is the earliest test (one week after infection) that screens for hepatitis B virus (HBV) infection. The test detects a protein (antigen) present in the structure of the virus. Test results must be interpreted with other hepatitis B profile tests (anti-HB antibodies and, if necessary, HB core antibodies, HBe antigen, etc.).

Test Preparations

➤ No special preparation needed.