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- Ordering Info
To view specimen requirements and codes please select your laboratory:
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Cortisol, Free, 24-Hour Urine with Creatinine, LC/MS/MS
2 mL urine from a 24-hour collection (no preservatives)
25 mL 6N HCl • 10 mL conc. glacial acetic acid • 10 g boric acid
Record 24-hour urine volume on test requisition and urine vial. Reference ranges do not apply to random urine samples.
Refrigerated (cold packs)
Room temperature: 48 hours
Refrigerated: 7 days
Frozen: 5 months
Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
|Quest Diagnostics Nichols Institute-San Juan Capistrano, CA|
|33608 Ortega Highway|
|San Juan Capistrano, CA 92675-2042|
Set up: Mon-Sat a.m.; Report available: 4 days
Urinary Free Cortisol is useful in the detection of patients with Cushing's syndrome for whom Free Cortisol concentrations are elevated.
The Result and LOINC information listed below should not be used for electronic interface maintenance with Quest Diagnostics. Please contact the Quest Diagnostics Connectivity Help Desk for more information at 800-697-9302.NOTE: The codes listed in the table below are not orderable Test Codes.
|Result Name||LOINC Code||Component Name|
|85986150||TOTAL VOLUME||3167-4||Specimen volume|
|85987390||CORTISOL, FREE, URINE||2147-7||Cortisol.free|
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.
LOINC assignment is based on a combination of test attributes, including the method used by the performing laboratory. For tests not performed by Quest Diagnostics, codes are assigned by the performing laboratory.
* 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.