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Miniaturized extraction method for analysis of synthetic opioids in urine by microextraction with packed sorbent and liquid chromatography—tandem mass spectrometry

Packed SorbentGas ChromatographyMedicineBioanalysisMass SpectrometrySynthetic OpioidsExtraction MethodAnalytical ChemistryLiquid ChromatographyClinical ChemistryChromatographic AnalysisPharmacologyChromatographyDrug Analysis