Is it normal for all the results of the hepatitis B surface antigen test (two pairs and a half) to be negative?

Generally, the "two pairs and a half" of hepatitis B refer to the five indicators of hepatitis B virus serological testing, and all being negative is considered normal. Detailed analysis is as follows:

Having all negative results in the "two pairs and a half" test indicates that hepatitis B virus-related antigens and antibodies have not been detected in the body, meaning there is no infection with the hepatitis B virus. However, it also means there is no protective antibody present. This condition itself is considered a normal healthy status, indicating that the body is currently not affected by the hepatitis B virus. Nevertheless, due to the lack of antibodies against hepatitis B virus, the risk of infection upon exposure to the virus is higher compared to individuals with antibodies. This is especially true when coming into contact with a hepatitis B patient's blood, bodily fluids, or sharing personal items, where extra attention to protection is needed.

Routinely avoid sharing personal items such as toothbrushes and razors that may come into contact with blood, to reduce the risk of infection; it is recommended to receive the hepatitis B vaccine timely and complete the full vaccination schedule to stimulate the production of protective antibodies in the body. After vaccination, regular follow-up testing of the "two pairs and a half" is advised to confirm whether antibodies have been produced and whether their levels are sufficient. If one's occupation or living environment involves frequent exposure to the hepatitis B virus, enhanced self-protection is necessary to avoid accidental exposure to the virus.