Hepatitis B antibody level testing is done primarily by drawing blood from a vein and then analyzing the blood for results. Hepatitis B antibody level testing is usually done by drawing blood from a patient’s vein. The blood is analyzed to determine liver function, Hepatitis B pentameter, and Hepatitis B DNA. The normal value of the Hepatitis B antibody titer is 10mIU/mL. When the blood test analysis shows that the Hepatitis B antibody titer is less than 10mIU/mL, it means that the patient is in the negative range at this point in time, indicating that the patient has not been exposed to anything that would raise the antibody, such as a Hepatitis B vaccination or a cure for a Hepatitis B infection. When the hepatitis B surface antibody is higher than 10mIU/mL, it usually means that the patient is immune to hepatitis B. The antibody will generally decline over time, and if it drops to about 10mIU/mL, the patient may begin to lose immunity to hepatitis B. In summary, hepatitis B antibody level testing is done by blood analysis. When the hepatitis B surface antibody is already less than 10mIU/mL, then you should take the hepatitis B vaccine for the whole period of time in order to get the hepatitis B antibody and reduce the chance of contracting the hepatitis B infection.