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What is a Hep B titer? A Hep B titer generally refers to a special test known as the Hepatitis B Surface Antibody test. The Hep B test is frequently used to check the blood for evidence of immunity to Hepatitis B. It is not a shot or vaccination and the analysis needs to be performed by a laboratory.
Antibody titer is a laboratory test that measures the level of antibodies in a blood sample. The antibody level in the blood tells your doctor whether or not you have been exposed to an antigen or something that the body thinks is foreign.The body uses antibodies to attack and remove foreign substances.ntibody titer is a laboratory test that measures the level of antibodies in a blood sample. The antibody level in the blood tells your doctor whether or not you have been exposed to an antigen or something that the body thinks is foreign. The body uses antibodies to attack and remove foreign substances.