Tube Type

Test ID   LAB61
EPIC Order
CPT Code(s)   82533
Group/Individual Test   Individual
Laboratory   Core Laboratory
Tube Station   Routine: 30; STAT: 888
Specimen Routine: 4 mL blood/serum separator tube/gold top/red top acceptable; see Comments for additional specimen information.
  Micro: 0.9 mL blood/gold or red top bullet



24 hours
Room temperature: 24 hrs
Refrigerator: 5 days
Frozen: 4 weeks
Availability Routine: 24 hrs/day
  STAT: Yes
Turnaround Time   Routine: 2 hrs; STAT: 1 hr
Reference Range  
Before 10:00am:  4.5 - 22.7 µg/dL
After 5:00pm:       1.7 - 14.1 µg/dL
Critical:                 <1.5 µg/dL
Testing is performed using OrthoClinical Diagnostics  CORT Immunoassay.  Different test methods should not be used interchangeably.  Heterophilic antibodies may cause interference.  High doses of biotin may cause test interference.

Reviewed by Karen Hrischuk on December 16, 2019

Note: Reference ranges provided on this web site are for guidance only, and may not reflect the most recent changes. Refer to laboratory reports for current reference data.

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514