A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Cortisol, Free, 24-Hour Urine with Creatinine, LC/MS/MS
Test CodeUCRTF24
Quest Code
11280
CPT Codes
82530
Includes
CPT code 81050 may be added at an additional charge for volume measurement
Preferred Specimen
2 mL of a 24-hour urine collected in a leak-proof urine container, no preservative
Minimum Volume
0.5 mL
Other Acceptable Specimens
24-hour urine in 25 mL 6N HCl, or 10 mL concentrated glacial acetic acid, or in 10 grams boric acid, submitted in a leak-proof urine container
Instructions
Record 24-hour urine volume on test requisition and urine vial. Reference ranges do not apply to random urine samples.
Transport Container
Urine Container, leak-proof
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: 14 days
Refrigerated: 21 days
Frozen: 90 days
Refrigerated: 21 days
Frozen: 90 days
Methodology
Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Monday-Friday Night
Report available: 3 Days
Report available: 3 Days
Reference Range
Cortisol, Free, 24-Hr Urine
Creatinine, 24-Hour Urine
Adult | 4.0-50.0 |
Pediatric | |
1-4 Years | 0.9-8.2 mcg/24 hrs |
5-9 Years | 1.0-30.0 mcg/24 hrs |
10-13 Years | 1.0-45.0 mcg/24 hrs |
14-17 Years | 3.0-55.0 mcg/24 hrs |
Creatinine, 24-Hour Urine
<3 Years | Not established | |
3-8 Years | 0.10-0.80 g/24 hours | |
9-12 Years | 0.20-1.40 g/24 hours | |
13-17 Years | 0.40-1.90 g/24 hours | |
>17 Years | 0.50-2.15 g/24 hours |
Clinical Significance
Urinary Free Cortisol is useful in the detection of patients with Cushing's syndrome for whom Free Cortisol concentrations are elevated.
Performing Laboratory
Quest Diagnostics Nichols Institute-San Juan Capistrano, CA |
33608 Ortega Highway |
San Juan Capistrano, CA 92675-2042 |