Gas Chromatography-Mass SpectrometryChromatography, GasMass SpectrometryChromatography, LiquidSpectrometry, Mass, Electrospray IonizationChromatography, High Pressure LiquidGasesTandem Mass SpectrometrySolid Phase MicroextractionVolatile Organic CompoundsMetabolomicsIonsMetabolomeVolatilizationChromatography, Thin LayerCyclotronsOils, VolatileProteomicsSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationSubstance Abuse DetectionPerianal GlandsFourier AnalysisReproducibility of ResultsDeuteriumOcimum basilicumFatty AcidsCalibrationAndrostenediolsHexanesChromatography, AffinityMagnetic Resonance SpectroscopyAtmospheric PressureAcetic AnhydridesSensitivity and SpecificityF2-IsoprostanesElementsCarboxylic AcidsMeconiumIsotope LabelingMolecular Sequence DataChromatography, Ion ExchangePeptidesReference StandardsDoping in SportsProteomeRhodiolaBiotransformationMolecular StructureChromatographySpacecraftAmino Acid SequenceChromatography, GelQuality ControlSolid Phase ExtractionLimit of DetectionComplex MixturesMicrochemistryFlame IonizationBreath TestsIndicators and ReagentsChromatography, Reverse-PhaseCarbon IsotopesSaturnUrinalysisOxidation-ReductionCattleHydroxyeicosatetraenoic AcidsStereoisomerismEstersPeptide MappingSpectroscopy, Fourier Transform InfraredEnvironmental MonitoringCarbohydrate SequenceTime FactorsKineticsChemistryChemical PhenomenaHydrolysisProteinsWater Pollutants, ChemicalLipoxygenaseAmino AcidsSteroidsMolecular Weight8,11,14-Eicosatrienoic AcidEquipment DesignLiverSpectrometry, Mass, Secondary IonMethylationOxygen IsotopesForensic MedicineBiological MarkersEvolution, PlanetaryPesticide ResiduesPolycyclic Hydrocarbons, AromaticCarbohydrate ConformationArachidonic AcidsNanotechnologyCarbon RadioisotopesTrypsin