Cortisol, Dexamethasone Suppression

Abbrev Code:CORTDEX   
Order Code:LAB8293Order Name:Cortisol, Dexamethasone Suppression
Order Instructions:For standard cortisol testing, please order LAB61.
Methodology:Immunoassay using competition principle
CPT Codes: 82533 x1
Turnaround Time:Performed and reported 24 hours/day.

Collection Instructions

Optimal Volume:2.5 mL
Minimum\Peds Volume:0.6 mL
Container:Green (lithium heparin, gel)
Alternate Containers: Green (lithium heparin, no gel), Green (lithium heparin) on ICE, Red (no gel), Red (gel)
Collection Instructions:Blood should be collected 8 hours post-dexamethasone given at midnight. 
Causes for Rejection:Gross hemolysis

Processing and Shipping

Specimen Processing:Centrifuge and aliquot 1.25 mL, 0.2 mL minimum. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature to arrive within 48 hours of collection. Alternatively, ship on dry ice.
Stability:1 day at room temperature; 4 days refrigerated; 1 year frozen.
Test Performed at or Referral Lab Chemistry  (Roche-UMMC East)


Reference Range:8 hrs post 1 mg dexamethasone given at midnight: < 1.8 µg/dL

Click HERE to Report test errors or omissions.
*If no email program is associated with this computer, please contact:
[email protected] for TestID: 7027"