Whether the hepatitis B core antibody is positive at 1 or less than 1 depends on the method of testing. A normal value for Hepatitis B Core Antibody of greater than 1 is negative, indicating that you are not infected with the Hepatitis B virus. A positive result with a core antibody value of less than 1 indicates infection with the hepatitis B virus, which may be a current infection, a previous infection, or a recovering infection. Hepatitis B core antibody is usually detected by using the principle of competition method, in which the antibody competes with the enzyme-labeled antibody for the encapsulated antigenic material to form an antigen-antibody complex, which then reacts with a color-developing agent to further detect the OD value, and if the color does not show up it is a positive result, and if the value is greater than 1 it is a negative result. For patients with abnormal hepatitis B core antibody, it is recommended to go to the hospital, complete the hepatitis B penta-analysis and other related tests, and make a clear diagnosis and treatment under the guidance of the doctor.