Hepatitis B 2.5 is also called Hepatitis B 5, which includes five indicators: Hepatitis B surface antigen, Hepatitis B surface antibody, Hepatitis B e antigen, Hepatitis B e antibody and Hepatitis B core antibody. Positive hepatitis B surface antigen indicates that the surface antigen of hepatitis B virus has been detected in the patient’s serum, which means that the patient is infected with hepatitis B virus; positive hepatitis B surface antibody indicates that the body has been infected with hepatitis B virus or has received hepatitis B vaccine, which produces protective antibodies against hepatitis B virus. Positive hepatitis B e antigen indicates that the replication of hepatitis B virus in the body is relatively active; positive hepatitis B e antibody indicates that the replication of hepatitis B virus is inactive and the contagiousness is low; hepatitis B core antibody is the counterpart antibody of hepatitis B virus core antigen, and positive hepatitis B core antibody indicates that the patient infected with hepatitis B virus is in the period of recovery or the patient who has been infected with hepatitis B virus has been cured. If hepatitis B surface antigen, hepatitis B e antigen and hepatitis B core antibody are positive, then it is hepatitis B triple positive, which indicates chronic hepatitis B and high infectiousness; if hepatitis B surface antigen, hepatitis B e antibody and hepatitis B core antibody are positive, then it is hepatitis B minor triple positive, which indicates chronic hepatitis B but low infectiousness. If you have hepatitis B 2.5 test, please follow the doctor’s advice to improve the follow-up examination and treatment.