What is the normal level of hepatitis B surface antibody?

Generally, the hepatitis B surface antibody refers to the antibody against the surface antigen of the hepatitis B virus. The reference value for the hepatitis B surface antibody is typically considered normal within the range of 0-10 mIU/mL. However, specific numerical values may vary slightly depending on the testing method and reagents used. Detailed analysis is as follows:

The hepatitis B surface antibody is a protective antibody whose primary function is to neutralize the hepatitis B virus and prevent chronic hepatitis B infection. When the antibody level is greater than or equal to 10 mIU/mL, it indicates that the body has immunity against the hepatitis B virus. This immunity may result from natural recovery after a previous hepatitis B infection or from vaccination against hepatitis B.

The higher the antibody level, the stronger the immunity tends to be. If the test value is less than 10 mIU/mL, it suggests insufficient antibody levels and weaker protection against the hepatitis B virus. In such cases, the risk of infection upon exposure to the hepatitis B virus may be relatively increased. However, hepatitis B surface antibody levels tend to decline over time, so regular testing is recommended.

It is important to maintain personal and public hygiene, such as during meals, by implementing individual servings or using serving chopsticks. Avoid contact with blood and other bodily fluids that may contain the hepatitis B virus to reduce the risk of infection. These measures also help prevent other infectious diseases.