Cortisol, A.M.

Test Code
CORTA


Quest Code
4212


CPT Codes
82533

Preferred Specimen
1 mL serum


Minimum Volume
0.5 mL


Instructions
Collect specimen between 7-9 a.m. Indicate the collection time on the specimen container and test requisition.

Note: Assay is not recommended when patient is receiving prednisone/prednisolone therapy due to cross reactivity with the antibody used in this assay


Transport Container
Serum separator tube (SST)


Transport Temperature
Room temperature


Specimen Stability
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 28 days


Methodology
Immunoassay (IA)

Setup Schedule
Day shift Daily


Report Available
1 day


Reference Range
0-3 Days (infants)  
  Premature (31-35 Weeks) ≤15.0 mcg/dL
  Term ≤14.0 mcg/dL
4 Days-1 Month Not established
2-11 Months 8 a.m. (7-9 a.m.) specimen 3.0-23.0 mcg/dL
1-17 Years 8 a.m. (7-9 a.m.) specimen 3.0-25.0 mcg/dL
>17 Years 8 a.m. (7-9 a.m.) specimen 4.0-22.0 mcg/dL


Clinical Significance
Cortisol is increased in Cushing's Disease and decreased in Addison's Disease (adrenal insufficiency).


Performing Laboratory
Quest Diagnostics LLC
200 Forest Street, 3rd Floor, Suite B
Marlborough, MA 01752-3023




The CPT Codes provided in this document 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 payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.