Cortisol, Free
0098391
 
Ordering Recommendation
Mnemonic
FCORTS
Methodology
Equilibrium Dialysis/Quantitative Electrochemiluminescent Immunoassay
Performed
Tue, Sat
Reported
1-5 days
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
 
Collect
Plain red or serum separator tube. Also acceptable: Lavender (EDTA) or pink (K2EDTA).  
Specimen Preparation
Centrifuge specimen. 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) Label plainly as a.m. or p.m. collection.  
Storage/Transport Temperature
Frozen.  
Unacceptable Conditions
Specimens collected in plasma separator tubes containing heparin. Grossly hemolyzed or heparinized specimens.  
Remarks
 
Stability
After separation from cells: Ambient: 4 hours; Refrigerated: 5 days; Frozen: 3 months  
Reference Interval
8-​10 a.m. collection 0.31-​1.19 µg/dL
4-​6 p.m. collection 0.15-​0.94 µg/dL
Interpretive Data


See Compliance Statement B: www.aruplab.com/CS
Note
To convert to nmol/L, multiply µg/dL by 27.6.
CPT Code(s)
82530
Components
Component Test Code*Component Chart Name
0098391Cortisol, Free
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, contact interface support at interface.support@aruplab.com.
Cross References
  • Hydrocortisone, Free