Epidemiologic study of Hepatitis B is by -
Anti HBc appears in serum a week or two after the appearance of HBs Ag. It is earliest antibody marker seem in blood.&remainlifelongg,it is an indicator of prior infection with HBV REF:MICROBIOLOGY ANANTHA NARAYANAN NINTH EDITION PAGE546
Hbe Ag
HBc Ag
HBs Ag is used
Anti HBc
Virology