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  • Title: Determination of urinary vanilmandelic acid and homovanillic acid by high performance liquid chromatography with amperometric detection.
    Author: Bauersfeld W, Diener U, Knoll E, Ratge D, Wisser H.
    Journal: J Clin Chem Clin Biochem; 1982 Apr; 20(4):217-20. PubMed ID: 7077238.
    Abstract:
    A method was developed for the simultaneous determination of urinary vanilmandelic acid and homovanillic acid, which included a two step prepurification and a reversed-phase high-performance liquid chromatography with amperometric detection. Conditions were evaluated for performing measurements with the amperometric detector free from electric interference. The method was linear between 2.5 and 100 mumol/l vanilmandelic acid and homovanillic acid with good precision (CV always less than 10%). The correlation between the present determination of vanilmandelic acid and the procedure of Pisano et al. ((1962) Clin. Chim. Acta 7, 285-291) was very good (r = 0.931). No interfering substances could be detected.
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