Quantitation of oxycodone in human plasma using high-performance liquid chromatography with electrochemical detection.


An original, highly sensitive and specific high-performance liquid chromatographic (HPLC) assay has been developed for the measurement of oxycodone in human plasma with a detection limit of 10 ng/ml using a 1.0-ml plasma sample. Plasma samples were initially acid-washed and then extracted twice at pH 10 with butyl chloride. Oxycodone and codeine (internal… (More)


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