Abstract
An assay based on combined microbore high-performance liquid chromatography–positive ion electrospray ionisation mass spectrometry with selected ion recording has been developed for the measurement of the antihistamine drug terfenadine in human plasma. A deuterated analogue of terfenadine was synthesised for use as an internal standard and extraction of terfenadine was carried out on C 18 solid phase extraction columns. The limit of detection of terfenadine in plasma is 0.1 ng/ml and the intra-assay coefficient of variation at 1 ng/ml is 10.1%. Plasma concentrations of terfenadine measured in six normal subjects following a 120 mg oral dose are reported.
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Schedule a callMore From: Journal of Chromatography B: Biomedical Sciences and Applications
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