title: Analysis of urinary 3-methoxy-4-hydroxyphenylglycol by high-performance liquid chromatography and electrochemical detection.
abstract: A high-performance liquid chromatographic method with electrochemical detection for the quantitation of total 3-methoxy-4-hydroxyphenylglycol (MHPG) in human urine is described. Existing methods for deconjugation and extraction have been optimized. The present method is simpler than existing methods with a high precision. Urinary MHPG is deconjugated enzymatically and subsequently extracted with ethyl acetate. The organic layer is extracted with acetic acid and a sample of the aqueous layer is injected into a reversed-phase column. In one run 90 samples can be processed. The critical parameters of deconjugation, extraction and chromatography are described. Data for reproducibility and selectivity are presented.
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods; D004563:Electrochemistry; D006018:Glycols / Q000652:urine*; D006801:Humans; D008734:Methoxyhydroxyphenylglycol / Q000652:urine*; D011618:Psychotic Disorders / Q000652:urine; D012016:Reference Values
chemical_list: D006018:Glycols; D008734:Methoxyhydroxyphenylglycol