DIAGNOSIS OF HEPATITIS B
The surface antigen of the HBV represents infection while the antibody to the hepatitis B surface antigen represents immunity. The window period is between the hepatitis B surface antigen and the Hepatitis B surface antibody. The core antibody helps diagnose during the window period and determine if the patient has an acute hepatitis B infection or chronic infection. The envelope antigen helps determine the replication of the hepatitis B virus during chronic infection.

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