2000
DOI: 10.1515/labm.2000.24.5.250
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Improved HPLC Method for the Determination of Cortisol and Cortisone in Urine. Verbesserte HPLC-Methode für die Bestimmung von Cortisol und Cortison im Urin

Abstract: An improved HPLC assay with ultraviolet detection for the simultaneous determination of cortisol and cortisone in urine is described. In contrast to previously reported sample extraction procedures, here a solvent extraction with diehloromethane is performed first followed by a solid-phase extraction using CIS-extraction cartridges. The method that applies a gradient elution system with methanol, acetonitrile, and water proved linear (30-3000 nmol/1), reproducible (CV 8.0-9.2%), and specific.Zusammenfassung: E… Show more

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