17-ketogenic steroid assay

17-ke·to·ge·nic ster·oid as·say

an infrequently performed colorimetric test based on the Zimmermann reaction, which indicates metabolites or adrenal and testicular steroids excreted as 17-ketones in the urine; values increase most in association with adrenocortical tumors, decrease value in Addison disease or in panhypopituitarism.