Cortisol, Free 24-hour Urine

Last Modified: 2/20/2019 3:36:55 PM

Medical Necessity Documentation:  
Client Notes:  
Patient Preparation:  
Specimen Requirements:

10.0 mL aliquot from a well mixed 24 hour Urine Collection in a Plastic Container

Collection Instructions:

1. When starting the 24-hour period, urinate and discard (throw-away) this specimen. NOTE THE TIME
2. From that time on, collect all urine by urinating into a clean container and transfer into the provided container. 
3. Try to pass the last urine just prior to the end of the 24 hour period. Add this urine into the container. 
4. Urine Specimen should be kept refrigerated during and after collection. 

For patient collection instruction sheet see Addendum D
For Spanish patient collection instruction sheet see Addendum D
For Burmese patient collection instruction sheet see Addendum D
For Arabic patient collection instruction sheet see Addendum D

Minimum Volume: 5.0 mL
Transport & Storage: Temperature/Stability: 48 hours Ambient
7 days Refrigerated (Preferred)
2 Months Frozen
Reference Range:

Cortisol, Free, Urine (mcg/24 hrs)
  Adult 4.0-50.0
  1-4 Years 0.9-8.2
  5-9 Years 1.0-30.0
  10-13 Years 1.0-45.0
  14-17 Years 3.0-55.0
Cortisol, Free, Urine (mcg/g creat)
  Adult 3.1-42.3
Creatinine, 24-Hour Urine (g/24 hours)
  3-8 Years 0.11-0.68
  9-12 Years 0.17-1.41
  13-17 Years 0.29-1.87
  Adult 0.63-2.50

Critical Ranges:  
Test Comments:  
Methodology: Liquid Chromatography, Tandem Mass Spectrometry
Clinical Significance: Urinary Free Cortisol is useful in the detection of patients with Cushing's syndrome for whom Free Cortisol concentrations are elevated.
Custom Panel: No


Turn Around Time: 8 to 12 days
Days Performed: Sunday, Monday, Tuesday, Wednesday, Thursday, Friday
Sites Performed: Quest - Chantilly to San Juan Capistrano
PHL Test Code: UCOR1
EPIC Test Code: LAB382
Send Out Test Code: 11280X
Alternate Test Names: Cortisol Free, Urine; Free Cortisol, Urine
Included Tests:  
CPT Coding: 82530, 82570

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