A highly sensitive assay for ritodrine in human serum by hydrophilic interaction chromatography-tandem mass spectrometry.


We developed a sensitive assay for ritodrine (RTD), a beta2-adrenergic agonist, in human serum. This method was based upon the selective and sensitive technique by a tandem mass spectrometry (MS/MS) using a hydrophilic interaction chromatography (HILIC) technique. This method involved a mixed-mode cation-exchange solid-phase extraction of RTD and… (More)


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