:Normal range
:Cycling female*
5-15days : 0.3-1.5 ng/mL
12-22days : 1.3-3.9 ng/mL
22-28days : 0.4-4.6 ng/mL
Male : 0.5-2.9 ng/mL*
Comment: Investigation of congenital adrenal hyperplasia. Lack of the C-21- hydroxylase enzyme (the most common defect) causes an increase in 17- hydroxyprogestrone (> 15 nmol/l) and deficiency of both 11-deoxycortisol and cortisol. Also used in the investigation of infertility, being a precursor of oestrogens and androgens which are reduced when the level of 17-hydroxyprogesterone is abnormally low
Sample: Serum