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Test Code DEXAM DEXAMETHASONE SUPPRESSION TEST, BLOOD

Important Note

Please Note:  The Dexamethasone Suppression test is used to test Cortisol levels and does not test Dexamethasone serum levels. 

 

For testing of Dexamethasone serum levels, please refer to this test in the Mayo test catalog.

Additional Codes

Software Test Code
Label Text DEXAM
EPIC LAB10226

Performing Laboratory

NorDx Laboratories

Useful For

Diagnosing Cushing’s Syndrome or depression due to neuroendocrine disorders

Method Name

Electrochemiluminescent Immunoassay (ECLIA)

Reference Values

< 5 µg/dL Cortisol

Days and Times Test Performed

Monday through Sunday

Report Available

1 Day

Profile Information

Individual Test Description
CORTISOL, POST DEXAMETHASONE

Specimen Type

Serum

Preferred Container

Serum Separator Tube (SST)

Preferred Volume

1.0 mL

Specimen Collection and Handling

  1. Patients should not be on steroid medication.
  2. Ensure Dexamethasone 1 mg (20µg/kg) is taken orally at 11:00pm (night prior to blood draw).
  3. At around 8:00 am collect blood in either a plain, red-top or Serum Separator Tube.
  4. Spin down, separate from clot and send refrigerated.
  5. Date and time drawn must be indicated on the requisition.

Advance Beneficiary Notice Requirements

No ABN Required

CPT Code Information

CPT Code

CPT Description

CPT Disclaimer
82533 Cortisol, Total, Quantitative  

Acceptable Alternative Container(s)

Red Top Tube