CalibrationCanadaChemistry Techniques, AnalyticalMass SpectrometryReproducibility of ResultsChromatography, High Pressure LiquidElectrophoresis, CapillaryReference StandardsBiosensing TechniquesGas Chromatography-Mass SpectrometryMetabolomicsSpectrometry, X-Ray EmissionSensitivity and SpecificityChromatography, GasFood AnalysisSpectrophotometry, AtomicEnvironmental MonitoringChromatography, LiquidMagnetic Resonance SpectroscopySpectrometry, Mass, Electrospray IonizationPharmaceutical PreparationsModels, StatisticalAlgorithmsData Interpretation, StatisticalHealth SurveysTime FactorsSpectroscopy, Fourier Transform InfraredMolecular StructureModels, BiologicalSex Determination ProcessesLongitudinal StudiesLogistic ModelsFlow Injection AnalysisLimit of DetectionResearch DesignCluster AnalysisIndicators and ReagentsSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationQuality ControlOxidation-ReductionSoftwareProteinsAutoanalysisKineticsAge DistributionRisk FactorsBiological MarkersHealth Services ResearchCross-Sectional StudiesSex Determination AnalysisEquipment DesignSpectrophotometry, UltravioletAnalysis of VarianceUnited StatesEquipment Failure AnalysisPrevalenceSex FactorsHealth StatusMultivariate AnalysisSocioeconomic FactorsBrainPhantoms, ImagingMicrochemistryElectrodesFossilsAge FactorsSolid Phase ExtractionTandem Mass SpectrometryDrug StabilityLeast-Squares AnalysisMethodsColorimetryMicrofluidic Analytical TechniquesElectrochemistryModels, TheoreticalTabletsSpectroscopy, Near-InfraredTransducersHydrogen-Ion ConcentrationSpectrophotometryWeights and MeasuresImmunoassayReference ValuesRadiometryPerceptual DistortionNephelometry and TurbidimetryLinear ModelsNomogramsMolecular Sequence DataComputer SimulationFluorometryEvaluation Studies as TopicSpectrometry, FluorescenceChromatography, Reverse-PhaseBlood Chemical AnalysisAcetonitrilesPotentiometryTemperatureFreeze DryingROC Curve