core window

That timespan in which an HBV-infected patient has detectable hepatitis core antigen—HBc—in the serum, but has yet to produce detectable levels of hepatitis B surface antibody; the ‘core window’ period in hepatitis B thus differs from the ‘window’ period

core window

Infectious disease That timespan in which an HBV-infected Pt has detectable hepatitis core antigen–HBc in the serum, but has yet to produce detectable levels of HB surface antibody; thus 'core window' period in HB differs from the 'window' period. See Hepatitis serology, Window period.