我醫生給我查了Hepatitis A， B Core Antibody (IgM) 和 C.

All negative. So I don't have antibody as well. This is why I need shots. My doctor told me if I already have antibody, such as Hepatitis A, (he said most of people already have been infected by Hepatitis A virus, but no symptom, so they don't know they have already had it. ) then I don't need the shot.