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Cortisol, Free And Cortisone, 24 Hour Urine with Creatinine
10 mL urine
Random urine; ok to add preservative after collection
Collect urine with 10 grams of boric acid or keep urine refrigerated during collection if preservative is not used. Record 24-hour urine volume on test requisition and urine vial. Reference ranges do not apply to random urine samples.
24 hour urine container
Refrigerated (cold packs)
Room temperature: 48 hours
Refrigerated: 7 days
Frozen: 6 months
Received room temperature
Liquid Chromatography, Tandem Mass Spectometry (LC/MS/MS)
|Quest Diagnostics Nichols Institute-San Juan Capistrano, CA|
|33608 Ortega Highway|
|San Juan Capistrano, CA 92675-2042|
Set up: Wed
|Cortisol, Free, Urine:|
|Adult:||4.0-50.0 µg/24 hrs|
|1-4 Years:||0.9-8.2 µg/24 hrs|
|5-9 Years:||1.0-30.0 µg/24 hrs|
|10-13 Years:||1.0-45.0 µg/24 hrs|
|14-17 Years:||3.0-55.0 µg/24 hrs|
|Cortisone, 24 hr Urine:|
|Adults:||23-195 µg/24 hrs|
|Creatinine, 24-Hour Urine:|
|Age (years)||g/24 hours|
Urinary free cortisol is useful in the detection of patients with Cushing's syndrome for whom free cortisol concentrations are elevated
Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.
(The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.)
* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.