title: Radioisotope dilution determination of vitamin B12 in dietary supplements.
abstract: A rapid and sensitive method for the determination of vitamin B12 in dietary supplements has been developed using a commercially available radioisotope dilution (RID) kit. The vitamin B12 was isolated by enzymatic extraction.
authors.affiliation: National Food Administration, Uppsala, Sweden.
authors.forename: B G
authors.initials: BG
authors.lastname: Osterdahl
authors.forename: E
authors.initials: E
authors.lastname: Johansson
mesh_terms: D005504:Food Analysis / Q000379:methods*; D005526:Food, Formulated / Q000032:analysis*; D011865:Radioisotope Dilution Technique; D011933:Reagent Kits, Diagnostic; D014805:Vitamin B 12 / Q000032:analysis*
chemical_list: D011933:Reagent Kits, Diagnostic; D014805:Vitamin B 12