17-hydroxycorticosteroid /-kôr′tikos″təroid/ , any steroid hydroxylated at carbon-17 secreted by adrenal glands and occasionally measured in the urine in a test for determining adrenal function and diagnosing hypoadrenalism or hyperadrenalism. The normal accumulation in the urine of men after 24-hour collection is 5.5 to 14.5 μg; in women, 4.9 to 12.9 μg; and in children, slightly less. The levels are normally two to four times higher in all cases after injection of 25 USP units of adrenocorticotropic hormone.