title: Simplified colorimetry of urinary homovanillic acid.
mesh_terms: D003124:Colorimetry / Q000379:methods; D006719:Homovanillic Acid / Q000652:urine*; D006801:Humans; D010648:Phenylacetates / Q000652:urine*
chemical_list: D010648:Phenylacetates; D006719:Homovanillic Acid