title: Histidine metabolic loading test to distinguish folic acid deficiency from vit. B12 in megaloblastic anemias.
mesh_terms: D000740:Anemia; D000749:Anemia, Megaloblastic; D001669:Biochemical Phenomena; D003937:Diagnosis, Differential; D005492:Folic Acid; D005494:Folic Acid Deficiency; D006639:Histidine / Q000378:metabolism*; D006801:Humans; D014806:Vitamin B 12 Deficiency / Q000175:diagnosis*
chemical_list: D006639:Histidine; D005492:Folic Acid
keywords: ANEMIA, HYPERCHROMIC; FOLIC ACID/deficiency; HISTIDINE/metabolism; VITAMIN B12 DEFICIENCY/differential diagnosis