Most people have done the “hepatitis B two-to-one” test and have seen this hepatitis B marker test, but in fact, many people do not fully understand the meaning of the various test indicators, in the end, how to read the test list. First, let’s understand the structure of the hepatitis B virus. The outermost layer of the hepatitis B virus is the outer membrane, called surface antigen, and then the inner membrane of the virus, which is mainly the core protein called core antigen; under normal circumstances, the core antigen cannot be detected in the blood, but only its soluble components, called e antigen. After a person is infected with hepatitis B virus, immune cells produce antibodies corresponding to the above three, namely surface antibody, core antibody and e antibody, thus constituting three pairs of antigens and antibodies, but because the core antigen cannot be detected in the serum, the hepatitis B virus markers during clinical examination mainly include hepatitis B virus surface antigen (HBsAg), hepatitis B virus surface antibody (HBsAb), hepatitis B virus e antigen ( HBeAg, Hepatitis B virus e antibody (HBeAb) and Hepatitis B virus core antibody (HBcAb) tests. The first one, “Hepatitis B surface antigen”, if positive, indicates that the person tested is infected with the hepatitis B virus. If it is negative, it means that the person tested is not currently infected with the hepatitis B virus. If the second test is positive for “hepatitis B surface antibody”, the person tested has developed antibodies to the hepatitis B virus and is generally not infected. If it is negative, the person tested has no antibodies.” The third item, “Hepatitis B e antigen”, if positive, indicates that the hepatitis B virus in the person tested is in the replication phase, which is the infectious phase. The fourth item “hepatitis B e antibody”, if positive, indicates that the person tested has been infected with the hepatitis B virus. If the fifth item “hepatitis B core antibody” is positive, and all other items are negative, or only the second item is positive, it indicates that the person tested has been infected with the hepatitis B virus, but has now developed antibodies; a positive test with HBsAg indicates that the person is now infected with the hepatitis B virus. In fact, sixty to seventy percent of adults have been infected with the hepatitis B virus, and most can recover on their own.