title: Pseudo HBsAg positivity among blood donors.
mesh_terms: D001782:Blood Donors; D005189:False Positive Reactions; D006509:Hepatitis B / Q000635:transmission*; D006514:Hepatitis B Surface Antigens / Q000032:analysis*; D006801:Humans; D012307:Risk Factors
chemical_list: D006514:Hepatitis B Surface Antigens