A 30-year-old member asked:
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what kinds of tests do you take to determine your cortisol level to decide if you have excess cortisol?

1 doctor answer
Dr. Melissa Young
9 years experience Internal Medicine
Suppression or urine: The 2 screening tests that can be performed are an overnight Dexamethasone suppression test (odst) or a 24 hour urine collection for cortisol. For the odst, you take Dexamethasone (a steroid) the night before you get blood drawn for a morning cortisol. The normal response to taking dex is a decrease in cortisol production. If one of these tests is abnormal, a 2 day dex test is done to confirm.
Answered on May 7, 2016
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