Cortisol, Free and Cortisone, 24 Hr with Creatinine
Fasting Required: No

Specimen: Urine, 24 hour

Lab: Quest Diagnostics

Results: 5-10 business days
Note: Result turnaround times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.

Includes: Creatinine

Patient Instructions: A collection jug should be picked up from your local Quest Patient Service Center. This is a 24-hour collection, with the exception of the first morning void. Collect all urine after that for a full 24-hours. Specimen must remain refrigerated during the collection period.

Description: Urinary free cortisol is useful in the detection of patients with Cushing's syndrome for whom free cortisol concentrations are elevated.