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17-hydroxycorticosteroid urine test


The 17-hydroxycorticosteroid test measures the level of 17-OHCS in the urine.

Alternative Names

17-OH corticosteroids; 17-OHCS

A 24-hour urine sample is needed. You will need to collect your urine over 24 hours. Your health care provider will tell you how to do this. Follow instructions exactly so that the results are accurate.

The provider will instruct you, if necessary, to stop medicines that may interfere with the test. These may include:

  • Birth control pills that contain estrogen
  • Certain antibiotics
  • Glucocorticoids

The test involves only normal urination. There is no discomfort.

17-hydroxycorticosteroid (17-OHCS) is a product formed when the liver and other body tissues break down the steroid hormone, cortisol.

This test can help determine if the body is producing too much of the hormone, cortisol. The test may be used to diagnose Cushing syndrome. This is a disorder that occurs when the body has a high level of cortisol.

Normal values:

  • Male: 4 to 14 mg per 24 hours
  • Female: 2 to 12 mg per 24 hours

Normal value ranges may vary slightly among different laboratories. Some labs use different measurements or test different samples. Talk to your provider about the meaning of your specific test results.

A higher than normal level of 17-OHCS may indicate:

A lower than normal level of 17-OHCS may indicate:


There are no risks with this test.


Chernecky CC, Berger BJ. 17-hydroxycorticosteroid - urine. In: Chernecky CC, Berger BJ, eds. Laboratory Tests and Diagnostic Procedures. 6th ed. Philadelphia, PA: Elsevier Saunders; 2013:659-660.

Juszczak A, Morris DG, Grossman AB, Nieman LK. Cushing's syndrome. In: Jameson JL, De Groot LJ, de Kretser DM, et al, eds. Endocrinology: Adult and Pediatric. 7th ed. Philadelphia, PA: Elsevier Saunders; 2016:chap 13.

Review Date: 10/28/2015
Reviewed By: Brent Wisse, MD, Associate Professor of Medicine, Division of Metabolism, Endocrinology & Nutrition, University of Washington School of Medicine, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.

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