Hepatitis B surface antibody greater than 1000 IU/L is normal and it is a good thing for the body, which means that it is immune to hepatitis B and will not be infected with it. The purpose of hepatitis B vaccination is also to produce positive hepatitis B surface antibodies, which are protective antibodies that protect the body from infection by the hepatitis B virus. A quantitative hepatitis B surface antibody greater than 10 IU/L is positive, which means that there is immunity. What needs to be worried about is producing a positive hepatitis B surface antigen. A positive hepatitis B surface antigen represents an infection by the hepatitis B virus and requires further tests, including hepatitis B viral load, liver function and abdominal ultrasound. If found positive for hepatitis B surface antibody there is nothing to worry about, while positive for hepatitis B surface antigen it is recommended to visit a regular hospital.