Improving the specificity of the nitrosonaphthol procedure for urinary 5-hydroxyindoleacetic acid.
D006801:Humans; D006863:Hydrogen-Ion Concentration; D006897:Hydroxyindoleacetic Acid / Q000652:urine*; D008722:Methods; D009281:Naphthalenes; D009603:Nitroso Compounds; D012965:Sodium Chloride
D009281:Naphthalenes; D009603:Nitroso Compounds; D012965:Sodium Chloride; D006897:Hydroxyindoleacetic Acid