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Cortisol, Free by Equilibrium Dialysis/LC-MS/MS
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Ordering Recommendation
Screen, diagnose, and monitor diseases associated with excess or deficient cortisol production.
Mnemonic
Methodology
Equilibrium Dialysis/Quantitative High Performance Liquid Chromatography-Tandem Mass Spectrometry
Performed
Sun, Tue, Thu, Fri
Reported
2-5 days
New York DOH Approval Status
Specimen Required
Recommended collection times are 8-10 a.m. or 4-6 p.m.
Plain red or serum separator tube, lavender (EDTA) or pink (K2EDTA).
Separate serum or plasma from cells within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.6 mL)
Frozen.
Grossly hemolyzed, icteric, lipemic or heparinized specimens.
Indicate time of draw on test request form and specimen tube.
After separation from cells: Ambient: Unacceptable; Refrigerated: 1 week; Frozen: 6 months
Reference Interval
| Age | Time of Collection | Reference Range |
|---|---|---|
| 0 - 17 years | Not established | |
| 18 years of age and older | 8-10 a.m. collection | 0.21 - 1.04 µg/dL |
| 18 years of age and older | 4-6 p.m. collection | 0.10 - 0.63 µg/dL |
Interpretive Data
This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.
Laboratory Developed Test (LDT)
Note
To convert to nmol/L, multiply µg/dL by 27.6.
Hotline History
CPT Codes
82530
Components
| Component Test Code* | Component Chart Name | LOINC |
|---|---|---|
| 2012698 | Cortisol, Free by ED/LC-MS/MS | 2145-1 |
Aliases
- Hydrocortisone, Free
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