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Minimizing the Number of False Positives in Dexamethasone Suppression Testing for the Diagnosis of Cushing’s Syndrome

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  • Chief Cushie

In this application note, Tecan presents a method for diagnosing Cushing's syndrome efficiently and accurately. The approach involves simultaneous the measurement of cortisol and dexamethasone levels using LC-MS/MS, which reduces false positives in dexamethasone suppression test (DSTs). The described LC-MS/MS method enables the tracking of multiple analytes, including cortisol, cortisone, and dexamethasone, in serum or plasma. Implementing this analytical approach offers clinical laboratories a straightforward means of performing DSTs, and the availability of a commercially available kit ensures reliable and reproducible results.


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