Cortisol, post Dexamethasone suppression test

Alphabetical Test listing

Cortisol, post Dexamethasone suppression test-68

  
Cortisol, post Dexamethasone suppression test
  
68
  
82533.1
  
DEX
  
Dexamethasone suppression
  
Serum
  
  
1.0 mL
  
0.5 mL
  

A number of protocols are available.

The most common protocol is to administer 1.0 mg of Dexamethasone at 11 PM and to draw the specimen the next morning at 8 AM.

It is not recommeded to do this test on patients treated with Prednisolone.

  

Spin

  

Gold serum separator (SST) tube

  
Lithium heparin (Li hep) plasma
Sodium heparin (Na hep) plasma
EDTA plasma
  

PST - spin

Dk green/lavender - spin and separate

  

Plasma separator (Lt green PST) or

False bottom plasma/serum transport vial/tube (AHL)

  

Refrigerated (preferred) - 14 days

Frozen - 30 days

  
  • Improper labels (unlabeled or mislabeled)
  • Hemolysis (some procedures)
  • Improper anticoagulant or ratio
  • Delay in transport
  • Improper storage temperature affecting results
  • Inappropriate timing of collection
  • Improper container
  • Leaking container resulting in compromised specimen
  • Quantity not sufficient (QNS)
  
AHL - Chemistry: C
  
Mo - Fr
  
1 - 2 days
  

< 5.0 µg/dL

  
82533
  
08/24/2004
  
11/25/2020
  
02/10/2020