title: False-positive ELISA reactivity to hepatitis B virus surface antigen (HBsAg)
mesh_terms: D004797:Enzyme-Linked Immunosorbent Assay; D005189:False Positive Reactions; D006509:Hepatitis B / Q000175:diagnosis*; D006514:Hepatitis B Surface Antigens / Q000032:analysis*; D006801:Humans; D009500:Neutralization Tests; D012529:Saudi Arabia
chemical_list: D006514:Hepatitis B Surface Antigens