title: Hepatitis B: prevaccination screening of individuals simultaneously positive for HBsAg and anti-HBs in one assay.
mesh_terms: D000914:Antibodies, Viral / Q000032:analysis*; D003365:Costs and Cost Analysis; D004797:Enzyme-Linked Immunosorbent Assay; D006509:Hepatitis B / Q000517:prevention & control*; D006510:Hepatitis B Antibodies / Q000032:analysis*; D006514:Hepatitis B Surface Antigens / Q000032:analysis*; D006801:Humans; D014611:Vaccination / Q000191:economics
chemical_list: D000914:Antibodies, Viral; D006510:Hepatitis B Antibodies; D006514:Hepatitis B Surface Antigens