To know if you are immune or if you have a current hepatitis B infection, or which stage your chronic hepatitis B is at, you will need to have a blood test done.

For people unfamiliar with hepatitis B tests, the results might seem complex.Initial tests look for three markers, hepatitis B surface antigens, hepatitis B surface antibodies and hepatitis B core antibodies. Different combinations of results of the these markers indicate different things. See these information sheets — available in English, Chinese and Vietnamese — for simple explanations.

Below is a summary of hepatitis B tests from SA Health.