title: A discrepancy between plasma and serum values for vitamin B12 and folate.
mesh_terms: D005492:Folic Acid / Q000097:blood*; D006801:Humans; D010949:Plasma / Q000032:analysis; D014805:Vitamin B 12 / Q000097:blood*
chemical_list: D005492:Folic Acid; D014805:Vitamin B 12