title: Hemoglobin-coated charcoal radioassay for serum vitamin B12. A simple modification to improve intrinsic factor reliability.
mesh_terms: D000418:Albumins; D002606:Charcoal; D003036:Cobalt Isotopes; D006454:Hemoglobins; D006801:Humans; D066298:In Vitro Techniques; D007437:Intrinsic Factor; D008722:Methods; D011865:Radioisotope Dilution Technique; D012965:Sodium Chloride; D014805:Vitamin B 12 / Q000032:analysis* / Q000592:standards
chemical_list: D000418:Albumins; D003036:Cobalt Isotopes; D006454:Hemoglobins; D002606:Charcoal; D012965:Sodium Chloride; D007437:Intrinsic Factor; D014805:Vitamin B 12