title: Improved quantitation for urinary 5-hydroxyindole acetate using the nitrosonaphthol reaction.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D006801:Humans; D006863:Hydrogen-Ion Concentration; D006897:Hydroxyindoleacetic Acid / Q000652:urine*; D009573:Nitrites; D009603:Nitroso Compounds; D011786:Quality Control
chemical_list: D009573:Nitrites; D009603:Nitroso Compounds; D006897:Hydroxyindoleacetic Acid; C025341:1-nitroso-2-naphthol