Cortisol - urine - Results
24-hour urinary free cortisol (UFC)
Normal range: 10 - 100 micrograms per 24 hours (mcg/24h)
Normal value ranges may vary slightly among different laboratories. Normal results may sometimes be present in someone with mild Cushing syndrome. Talk to your doctor about the meaning of your specific test results.
The examples above show the common measurements for results for these tests. Some laboratories use different measurements or may test different specimens.
What abnormal results mean:
Increased levels of urine cortisol may indicate:
Decreased levels of urine cortisol may indicate:
The test may also be done in cases of exogenous Cushing syndrome.
- Reviewed last on: 11/23/2009
- Ari S. Eckman, MD, Division of Endocrinology and Metabolism, Johns Hopkins School of Medicine, Baltimore, MD. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
Stewart PM. The adrenal cortex. In: Kronenberg HM, Melmed S, Polonsky KS, Larsen PR, eds. Williams Textbook of Endocrinology. 11th ed. Philadelphia, PA: Saunders Elsevier; 2008: chap 14.
Melmed S, Kleinberg D. Anterior pituitary. In: Kronenberg HM, Melmed S, Polonsky KS, Larsen PR, eds. Williams Textbook of Endocrinology. 11th ed. Philadelphia, PA: Saunders Elsevier; 2008: chap 8.
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