Abstract
A liquid chromatographic method for the simultaneous determination of 6β-hydroxycortisol and 6β-hydroxycortisone using dexamethasone as internal standard in human urine is described. Separation was achieved on a reversed-phase C18 column by a gradient elution of acetonitrile and water containing 0.1% formic acid. 6β-Hydroxycortisol and 6β-hydroxycortisone were monitored by UV absorption at 244 nm. The lower limits of quantitation were 5 ng mL−1 for both analytes. The intra-day and inter-day relative standard deviations were less than 7.4%. Accuracy determined at three concentrations ranged between 92.16 and 109.77%. The sensitivity, specificity and accuracy of this method were demonstrated to be satisfactory for measuring both metabolites in human urine.
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We thank the Health Department of Hunan Province for the support on this work.
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Luo, X., Zhu, L., Wu, W. et al. Simultaneous Determination of 6β-Hydroxycortisol and 6β-Hydroxycortisone in Human Urine by LC with UV Absorbance Detection. Chroma 70, 1215–1219 (2009). https://doi.org/10.1365/s10337-009-1267-9
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DOI: https://doi.org/10.1365/s10337-009-1267-9