Quantitative standardization in the detection of hepatitis B surface antigen: results of a collaborative study involving 74 laboratories.
D001782:Blood Donors; D003168:Complement Fixation Tests / Q000592:standards; D003378:Counterimmunoelectrophoresis / Q000592:standards; D005189:False Positive Reactions; D006386:Hemagglutination Tests / Q000592:standards; D006511:Hepatitis B Antigens / Q000032:analysis*; D006801:Humans; D005779:Immunodiffusion / Q000592:standards; D011863:Radioimmunoassay / Q000592:standards; D012698:Serologic Tests / Q000592:standards*
D006511:Hepatitis B Antigens