Sign In
Labcorp Oklahoma, Inc.
Test Directory


Index:

Dexamethasone

Order Name DEXAMETH
Test Number: 3621100
Revision Date 12/12/2022
Test Name Methodology LOINC Code
Dexamethasone
Mass Spectrometry (MS) 14062-4 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 3 mL (1) Serum Clot Activator (Red Top, No-Gel) Frozen
Alternate 1 3 mL (1) Plasma Sodium Heparin (Green Top / No-Gel) Frozen
Alternate 2 3 mL (1) Plasma EDTA (Lavender Top) Frozen
Instructions Notes: 1.0 mL (Note: This volume Does NOT allow for repeat testing.)
Specimen Type: Red-top tube, gel-barrier tube, lavender-top (EDTA) tube OR green-top (heparin) tube
Specimen Storage: FREEZE
Specimen Collection: Separate serum/plasma from cells within one hour of collection. Transfer to a plastic transport tube and FREEZE. To avoid delays in turnaround time when requesting multiple test on frozen samples, please submit separate frozen specimen for each test requested.
Special Instructions: Testing is performed at Esoterix Endocrinology Laboratory: ES#500140
Specimen Stability: Room temperature up to 6 days Refrigerated up to 14 days Frozen up to 1 year
GENERAL INFORMATION
Expected TAT 7 - 13 days  
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. 
Performing Labcorp Test Code 500118 
Notes Labcorp Test Code: 500118
CPT Code(s) 80299
Lab Section Reference Lab