title: Radioisotope derivative procedure for determination of epinephrine or norepinephrine.
mesh_terms: D002852:Chromatography, Ion Exchange; D004837:Epinephrine / Q000032:analysis / Q000652:urine*; D006801:Humans; D007457:Iodine Radioisotopes; D008722:Methods; D009638:Norepinephrine / Q000032:analysis / Q000652:urine*
chemical_list: D007457:Iodine Radioisotopes; D009638:Norepinephrine; D004837:Epinephrine