Overnight Dexamethasone Suppression Test: Why It Is Done


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Why It Is Done


An overnight dexamethasone suppression test is done to check for a condition in which large amounts of cortisol are produced by the adrenal glands (Cushing's syndrome).



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Last updated: June 26, 2008
Author: Bets Davis, MFA
Reviewed By: Caroline S. Rhoads, MD - Internal Medicine, David C.W. Lau, MD, PhD, FRCPC - Endocrinology & Metabolism
Editors: Susan Van Houten, RN, BSN, MBA, Tracy Landauer

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