The test for hepatitis B is to check the five indicators of hepatitis B. If the five indicators of hepatitis B are negative, such people are normal, but they also have no antibodies and need to be vaccinated against hepatitis B. If the hepatitis B surface antibody is positive, such people are protective and generally will not be infected with the hepatitis B virus. There is also a situation where the hepatitis B surface antigen is positive, whether it is a major or minor triplet, which indicates infection with the hepatitis B virus. Such people need further investigation of liver function, hepatitis B DNA, and ultrasound of the liver to assess their condition. Some patients may be 25 positive or 245 positive, so as long as the hepatitis B surface antibody is positive, it is generally protective, and such people are generally recommended to be rechecked again in about 3-6 months.