Urinary Free Cortisol: Sensitivity and Specificity
Introduction:
None written. Excerpt from the entry in Cushing's Syndrome:
>270 nmol/24h
>270 nmol/24h
normal range: <80–120 mcg/24 h or <220–330 nmol/ 24h (RIA);
<50 mcg/24 h or <138 nmol/24h (HPLC).
Associated Diagnoses:
94% sensitive, 94% specific