Amrinone and N-acetylamrinone assay in human plasma using solid-phase extraction and reversed-phase chromatography.
A simple and sensitive liquid chromatographic assay for simultaneous quantitation of amrinone and N-acetylamrinone in human plasma was developed. The method involves extraction of samples via activated solid-phase extraction Bond Elut C18 disposable columns, followed by chromatographic separation on a reversed-phase phenyl column using isocratic condition and UV detection. The assay can measure concentrations of both compounds over the range 0.075-10 micrograms ml-1. The injection interval is 11 min. The inter-day relative standard deviation (RSD) for replicate analysis of spiked samples is less than 10% and the accuracy more than 94% for both compounds over the standard curve range. The assay has been successfully applied to pharmacokinetic studies in humans.
Bureau of Drug Research, Health Protection Branch, Ottawa, Ontario, Canada.
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Laganière
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Goernert
D000676:Amrinone / Q000031:analogs & derivatives* / Q000097:blood*; D002851:Chromatography, High Pressure Liquid; D006801:Humans; D012015:Reference Standards; D015203:Reproducibility of Results; D013056:Spectrophotometry, Ultraviolet
C023499:N-acetylamrinone; D000676:Amrinone