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Improved liquid chromatographic determination of serum cortisol with double internal standardization compared to radioimmunoassay and fluorometry, and evaluated by isotope dilution/mass spectrometry

Adrenal GlandStress HormoneGas ChromatographyBioanalysisPhysiologyMass SpectrometryIsotope Dilution/mass SpectrometryAnalytical ChemistryLiquid ChromatographyClinical ChemistrySerum CortisolChromatographic AnalysisMedicineDouble Internal StandardizationChromatography