Automated measurement of catecholamines in urine, plasma and tissue homogenates by high-performance liquid chromatography with fluorometric detection.
An automated catecholamine analyzer was assembled from a high-performance liquid chromatograph, an autosampler and an air segmented reactor equipped with a sensitive fluorometer. The trihydroxyindole technique was applied to the fluorometric reactor. Urine, plasma and brain homogenate were usually purified on an alumina column prior to high-performance liquid chromatography (HPLC). Centrifuged urine and a supernatant of brain homogenate can, however, be injected onto the HPLC column without further pre-treatment. The measurement of noradrenaline and adrenaline in plasma of a man at rest required 0.5--1 ml samples. Approximately 100 alumina eluates from urine can be treated per day when the analyzer is operated continuously.
D000818:Animals; D001923:Brain Chemistry; D002395:Catecholamines / Q000097:blood* / Q000652:urine; D002851:Chromatography, High Pressure Liquid / Q000295:instrumentation / Q000379:methods; D004837:Epinephrine / Q000097:blood; D006801:Humans; D051379:Mice; D009638:Norepinephrine / Q000097:blood
D002395:Catecholamines; D009638:Norepinephrine; D004837:Epinephrine