The first item of the five hepatitis B results is usually the hepatitis B surface antigen, referred to as AoA. If the first item of the five hepatitis B results is positive, that is, the hepatitis B surface antigen is positive, it mostly indicates that the body is infected with the hepatitis B virus. Although the body is infected with the hepatitis B virus, but whether the hepatitis B virus has attacked the human liver, but also depends on the results of liver function. When the liver function is normal, it indicates that the hepatitis B virus and the body are living together peacefully. When the liver function changes, it indicates that the hepatitis B virus has started to attack and damage the liver. The more obvious the abnormal liver function results are, the more serious the damage caused by the hepatitis B virus to the liver. Therefore, if you are positive for hepatitis B surface antigen, you should further check your liver function, hepatitis B virus DNA and liver ultrasound to determine whether you need to start antiviral treatment.