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Labcorp Oklahoma, Inc.
Test Directory


Index:

Dexamethasone

Order Name DEXAMETH
Test Number: 3621100
Revision Date 09/11/2017
Test Name Methodology LOINC Code
Dexamethasone
Liquid Chromatography/Tandem Mass Spectrometry 14062-4 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 1 mL (0.5) Serum Clot Activator (Red Top, No-Gel) Refrigerated
Alternate 1 1 mL (0.5) Plasma EDTA (Lavender Top) Refrigerated
Instructions Draw specimen between 8:00 and 10:00 A.M.
Separate serum or plasma from cells ASAP or within 2 hours of collection.
Transfer 1 mL (Min: 0.5 mL) serum or plasma to a Standard Transport Tube.
Stability After separation from cells: Ambient: Unacceptable; Refrigerated: 1 week; Frozen: 6 months
GENERAL INFORMATION
Testing Schedule Wed, Sat 
Expected TAT 2-5 days from setup  
Clinical Use Measurement of Dexamethasone is useful in assuring compliance with Dexamethasone treatment and documenting adequate dosing during such procedures as the dexamethasone Suppression Test used in the differential diagnosis of Cushing's syndrome. 
Notes Reference Lab: ARUP
Test Code: 2003248
Click Here to view information on the ARUP website.
CPT Code(s) 80299
Lab Section Reference Lab