The high surface antigen of hepatitis B is due to the infection of hepatitis B virus. After the hepatitis B virus infects the body and replicates in large quantities, there will be a large number of components related to the hepatitis B virus particles in the blood circulation, in addition to the complete hepatitis B virus particles, some of the small particles that make up the hepatitis B virus will also be scattered in the blood circulation, one of the most numerous particles is the hepatitis B surface antigen. So on the flip side, a high surface antigen of hepatitis B also means that it is infected with the hepatitis B virus, and at this time, if you check the five items of hepatitis B, you are likely to find that the core antibody of hepatitis B, or the e antibody and e antigen of hepatitis B become positive, and then it is a case of major or minor triple-positive. Of course, if the hepatitis B surface antigen test is quantitative and is slightly elevated, the elevation is not obvious, and is accompanied by positive hepatitis B surface antibodies, it is suspected that the high hepatitis B surface antigen is probably not really high, so it should be combined with each of the specific hepatitis B five values, as well as the quantitative hepatitis B virus DNA to make a judgment.