n IgM anti-HBc:   IgM is an antibody subclass of
anti-HBc. Indicates recent infection with HBV
(<4-6 mos.).
n IgG anti-HBc:   IgG is a subclass of anti-HBc. Indicates
“older” infection with HBV.
n HBeAg:   Hepatitis B “e” antigen. Can only be present if
HBsAg is positive. Marker of high degree of infectivity.
n Anti-HBe: Antibody to “e” antigen. May be present in
infected or immune person.