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Simple method for the determination of morphine and its active glucuronide metabolite in human plasma by
J L Mason1, S P Ashmore, A R Aitkenhead
1University Department of Anaesthesia, Queens Medical Centre, Nottingham, UK.
Journal of Chromatography
|September 18, 1991
Abstract:
A simple method for the simultaneous determination of morphine and its pharmacologically active metabolite morphine-6-glucuronide in 0.5 ml human plasma is described. It is based on the method of Svensson [J. Chromatogr., 230 (1982) 427 and 375 (1986) 174], but uses only one solid-phase extraction cartridge prior to chromatography and only a 20-microliter injection volume. Mean recoveries of 90 and 85% for morphine and morphine-6-glucuronide, respectively, were obtained, the limit of detection being 2 nmol/l (at a signal-to-noise ratio of 3.0).