| 17-hydroxycorticosteroid test | A test, dependent on the Porter-Silber reaction, that is used as a measure of adrenocortical function and is performed on urine. Low values are seen in Addison's disease and hypopituitarism; high values are seen in Cushing's syndrome and extreme stress. Synonym: 17-OH-corticoids test, Porter-Silber chromogens test. (05 Mar 2000) |
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| 17-hydroxycorticosteroids | <biochemistry> A urine test which measures the amount of 17-hydroxycorticosteroids. A fraction of cortisol is metabolised to 17-hydroxycorticosteroids and excreted in the urine. Conditions that result in increased serum cortisol (Cushing's syndrome and Cushing's disease) will result in elevations in 17-hydroxycorticosteroid levels in the urine. (13 Nov 1997) |