17 OHCS – 17 Hydroxycorticosteriods

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 cortisol. The test may be used to diagnose Cushing syndrome. This is a disorder that occurs when the body has a constant high level of cortisol.

The urine volume and urine creatinine are often done with 17-OHCS test at the same time. This helps the provider interpret the test.

This test is not done often now. The free cortisol urine test is a better screening test for Cushing disease.