The 17-hydroxycorticosteroid (17-OHCS) test measures the level of 17-OHCS in the urine.
17-OH corticosteroids; 17-OHCS
How the Test is Performed
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.
How to Prepare for the Test
The health care provider will instruct you, if necessary, to stop medicines that may interfere with the test. These may include:
Birth control pills that contain estrogen
How the Test will Feel
The test involves only normal urination. There is no discomfort.
Why the Test is Performed
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.
Male: 4 to 14 milligrams per 24 hours
Female: 2 to 12 milligrams per 24 hours
Normal value ranges may vary slightly among different laboratories. Some labs use different measurements or test different samples. Talk to your doctor about the meaning of your specific test results.
What Abnormal Results Mean
A higher than normal level of 17-OHCS may indicate:
Guber HA, Farag AF. Evaluation of endocrine function. In: McPherson RA, Pincus MR, eds. Henry's Clinical Diagnosis and Management by Laboratory Methods. 22nd ed. Philadelphia, Pa: Elsevier Saunders; 2011:chap 24.
Stewart PM, Krone NP. The adrenal cortex. In: Melmed S, Polonsky KS, Larsen PR, Kronenberg HM, eds. Williams Textbook of Endocrinology. 12th ed. Philadelphia, Pa: Elsevier Saunders; 2011:chap 15.
Brent Wisse, MD, Associate Professor of Medicine, Division of Metabolism, Endocrinology & Nutrition, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Bethanne Black, and the A.D.A.M. Editorial team.