CORTISOL, FREE, URINE

Test Documentation
Specimen Required
Collect 24 hour urine, refrigerate during collection. Mix well and send 20.0 mL aliquot (2.0 mL minimum) refrigerated in a screw-capped plastic urine container. Record total volume on request form and sample label.
pH 5-8

Alternate Specimen
Boric Acid preserved urine

Rejection Criteria
Acid preservatives other than boric acid, random urine

Methodology
Liquid Chromatography/Tandem Mass Spectrometry

Stability
Room Temperature: 2 days; Refrigerated: 7 days; Frozen: 14 days

Reference Range
3-8 years:   Female and Male   <18 µg/24 hour  
9-12 years:   Female and Male   <37 µg/24 hour  
13-17 years   Female and Male   <56 µg/24 hour  
18 years and older   Female   <45 µg/24 hour  
18 years and older   Male   <60 µg/24 hour  

Performed
Tuesday, Friday

Turnaround Time1-4 days
Test CodeUFC01
CPT-4 Code (s)
82530
LOINC Codes
Total volume   19153-6  
Hours
Cortisol   2144-4  
Cortisol/24h   2147-7  

Warde
Medical
Laboratory