Colorimetric method for the rapid and quantitative determination of 4-hydroxy-3-methoxymandelic acid (vanilmandelic acid) in human urine.
D001391:Azo Compounds / Q000652:urine; D003124:Colorimetry / Q000379:methods; D006801:Humans; D006863:Hydrogen-Ion Concentration; D013053:Spectrophotometry; D014642:Vanilmandelic Acid / Q000652:urine*
D001391:Azo Compounds; D014642:Vanilmandelic Acid