title: The effect of EDTA in the electroimmunoassay of factor IX antigen in warfarin-treated patients.
mesh_terms: D000941:Antigens / Q000032:analysis; D004492:Edetic Acid / Q000494:pharmacology*; D004587:Electrophoresis, Agar Gel; D005164:Factor IX / Q000032:analysis* / Q000276:immunology; D002836:Hemophilia B / Q000097:blood*; D006801:Humans; D014859:Warfarin / Q000627:therapeutic use*
chemical_list: D000941:Antigens; D014859:Warfarin; D005164:Factor IX; D004492:Edetic Acid