title: Simple method for isolating free urinary catecholamines by boric acid gel chromatography.
mesh_terms: D001888:Boric Acids; D002395:Catecholamines / Q000652:urine*; D002850:Chromatography, Gel / Q000379:methods; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D002855:Chromatography, Thin Layer / Q000379:methods; D004298:Dopamine / Q000652:urine; D004837:Epinephrine / Q000652:urine; D006801:Humans; D007202:Indicators and Reagents; D009638:Norepinephrine / Q000652:urine
chemical_list: D001888:Boric Acids; D002395:Catecholamines; D007202:Indicators and Reagents; D004298:Dopamine; D009638:Norepinephrine; D004837:Epinephrine