Cortisol, P.M.

Test Code
4213


CPT Codes
82533

Preferred Specimen
1 mL serum


Minimum Volume
0.5 mL


Instructions
Collect specimen between 3-5 p.m. Indicate collection time on specimen container and test requisition.

Note: Assay 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
Tues-Sat


Report Available
4 days


Reference Range
0-3 Days (infants)  
  Premature (31-35 Weeks) ≤15.0 mcg/dL
  Term ≤14.0 mcg/dL
4 Days-11 Months Not established
≥1 Year 4 p.m. (3-5 p.m.) specimen 3.0-17.0 mcg/dL


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


Performing Laboratory
Quest Diagnostics-Seattle
1737 Airport Way S Suite 200
Seattle, WA 98134-1636



Last Updated: November 6, 2024


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.