title: Serum vitamin B12 assays: how accurate are they?
mesh_terms: D000752:Anemia, Pernicious / Q000175:diagnosis; D006801:Humans; D011869:Radioligand Assay; D012016:Reference Values; D012546:Schilling Test; D014805:Vitamin B 12 / Q000097:blood*
chemical_list: D014805:Vitamin B 12