Vitamin B12: are serum radioassay measurements reliable?
D000752:Anemia, Pernicious / Q000097:blood / Q000175:diagnosis; D006801:Humans; D007437:Intrinsic Factor; D011863:Radioimmunoassay / Q000592:standards*; D014805:Vitamin B 12 / Q000097:blood* / Q000627:therapeutic use; D014806:Vitamin B 12 Deficiency / Q000097:blood / Q000175:diagnosis / Q000188:drug therapy
D007437:Intrinsic Factor; D014805:Vitamin B 12