A modified isotopic dilution method for measuring the serum vitamin B 12 level.
D000752:Anemia, Pernicious / Q000097:blood*; D001665:Binding Sites; D001681:Biological Assay; D001774:Blood Chemical Analysis; D002021:Buffers; D002606:Charcoal; D003036:Cobalt Isotopes; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007437:Intrinsic Factor; D007778:Lactobacillus; D008722:Methods; D011865:Radioisotope Dilution Technique; D012710:Serum Albumin, Bovine; D014805:Vitamin B 12 / Q000032:analysis / Q000097:blood*
D002021:Buffers; D003036:Cobalt Isotopes; D002606:Charcoal; D012710:Serum Albumin, Bovine; D007437:Intrinsic Factor; D014805:Vitamin B 12