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Labcorp Oklahoma, Inc.
Test Directory


Index:

Cortisol Free, Serum

Order Name CORT FR S
Test Number: 4503500
Revision Date 07/18/2023
Test Name Methodology LOINC Code
Cortisol Free, Serum
Equilibrium Dialysis 2145-1 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 1.6 mL (0.8 mL) Serum Clot Activator (SST or Red No-Gel) Frozen
Instructions Notes: 1.6 mL (Note: This volume Does NOT allow for repeat testing).
Specimen Type: Red-top tube or gel-barrier tube
Specimen Storage: FREEZE 
Specimen Collection: Separate within two hours of venipuncture. Transfer specimen to a plastic transport tube before freezing.
Special Instructions: Testing is performed at Esoterix Endocrinology Laboratory: ES#804020
Specimen Stability:  Room temperature up to 7 days Refrigerated up to 7 days Frozen up to 6 months Freeze/thaw cycle: Stable X6
GENERAL INFORMATION
Expected TAT 6 - 10 days  
Performing Labcorp Test Code 504020 
Notes Labcorp Test Code: 504020
CPT Code(s) 82530
Lab Section Reference Lab