Positive hepatitis B surface antibody, if hepatitis B surface antibody >10IU/ml is positive, antibody <30IU/ml is a weak positive state, 30-100IU/ml is positive, >100IU/ml antibody level is better. If the antibody level is >500IU/ml, the antibody level is very good and can last for more than ten years. Regardless of the level of antibodies, it can provide good prevention against hepatitis B virus, because the low level of antibodies may be related to the antigens of hepatitis B. For example, hepatitis B vaccine or hepatitis B virus, a long time no contact, but the body’s immunity is still normal, once the virus invasion, will quickly stimulate the body, the production of antibodies to neutralize the virus or play hepatitis B vaccine, the body produces higher levels of hepatitis B antibody. The above is for reference only, please refer to the doctor’s face-to-face guidance for specific medication and treatment.