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Instability of calcium channel antagonists during sample preparation for LC–MS–MS analysis of serum samples

EngineeringSample PreparationCalcium ChannelMedicineBioanalysisMass SpectrometryPhysiologyBiomedical AnalysisAnalytical ChemistryElectrophysiologyClinical ChemistryPharmacologySerum SamplesChromatographyDrug Analysis