Chromatography, High Pressure LiquidChromatography, LiquidChromatography, Reverse-PhaseTandem Mass SpectrometryLimit of DetectionSpectrometry, Mass, Electrospray IonizationMolecular Sequence DataSolid Phase ExtractionMass SpectrometryChromatographyReproducibility of ResultsDrug StabilityAmino Acid SequenceAcetonitrilesChromatography, GasChromatography, Thin LayerCalibrationSpectrophotometry, UltravioletGas Chromatography-Mass SpectrometryReference StandardsLiquid-Liquid ExtractionChromatography, Ion ExchangeSensitivity and SpecificityIsomerismTablets3,4-MethylenedioxyamphetamineStereoisomerismIndicators and ReagentsPlant BarkDosage FormsDrug ContaminationChromatography, PaperPlant ExtractsSilicon DioxideChromatography, GelSolventsMethodsMolecular StructureSubstance Abuse DetectionLeast-Squares AnalysisLinear ModelsChromatography, AffinityDrugs, Chinese HerbalBuffersHydrogen-Ion ConcentrationElectrochemistryPeptidesElectrophoresis, Polyacrylamide GelProteomicsMolecular WeightPolymersCattleTemperatureMagnetic Resonance SpectroscopyCarbon IsotopesProteinsSpectrometry, FluorescenceKineticsSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationAnxiety, SeparationLiverRabbitsEscherichia coliImmunomagnetic SeparationCell SeparationElectrophoresis, CapillaryMaternal DeprivationElectrophoresis, MicrochipCountercurrent DistributionChromatography, Micellar Electrokinetic CapillaryElectrophoresisChemical FractionationCapillary ElectrochromatographyChromatidsCentrifugation, Density GradientTwins, ConjoinedTime FactorsMicrofluidic Analytical TechniquesCentrifugationAnaphaseMagneticsDivorceMitosisSilica GelIsoelectric FocusingPovidoneSeparaseWaterChromosome SegregationMicrochemistryCentrifugation, IsopycnicSpindle ApparatusElectroosmosisPhase TransitionChemistry Techniques, AnalyticalModels, BiologicalSecurinAdsorptionDNAPaternal Deprivation