Abnormally low ratio of tetrahydrocortisol (THF) plus 5-alpha-THF to tetrahydrocortisone (THE).
Comment:
In cortisone reductase deficiency-2, the ratio of tetrahydrocortisol (THF) plus 5-alpha-THF to tetrahydrocortisone (THE), which in CORTRD patients is typically less than 0.1 (reference range, 0.7 to 1.2).