Faculty

Dana Erickson, M.D.

Clinical Studies

Open

Hair cortisol in diagnosis of endogenous hypercortisolism. Rochester, Minn.
Hypothesis: Hair cortisol and cortisone in patients with Cushing syndrome (CS) will be elevated compared to patients with Pseudo-Cushing syndrome and healthy volunteers as established by Mayo Medical Laboratories.

Aims:

1. To establish optimal cut-off value of scalp hair cortisol and cortisone measured by novel Liquid-Chromatography tandem mass spectrometry (LC-MS/MS) assay developed by Mayo Medical laboratories

in patients with endogenous CS and in patients in whom CS was suspected but diagnosis rejected.

2. To compare performance of scalp hair cortisol and cortisone based on mild, moderate or severe clinical suspicion of CS and currently available laboratory tests including 24-h urinary cortisol and LNSC.

Closed for Enrollment

Copeptin as a Biomarker for Central Diabetes Insipidus Development Following Pituitary Surgery Rochester, Minn.
The purpose of this study is to investigate if a blood test measuring copeptin within 24 hours following pituitary surgery could predict development of diabetes insipidus (increased urination and thirst with fluid balance problems) as opposed to the clinical methods we currently use.

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