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St. John Health System
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Index:

Carcinoembryonic Antigen (CEA)

Order Name CEA ABB
Test Number: 4500425
Revision Date 10/28/2025
Test Name Methodology LOINC Code
Carcinoembryonic Antigen (CEA)
Chemiluminescence Assay 2039-6 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 2mL (1mL) Serum Clot Activator SST Refrigerated
Alternate 1 2mL (1mL) Plasma Lithium Heparin PST (Light Green Top) Refrigerated
Instructions Stability: Ambient 1 day, Refrigerated 7 days, Frozen >7days
GENERAL INFORMATION
Testing Schedule Mon - Fri 
Expected TAT 1-3 days 
Clinical Use Useful for monitoring colorectal cancer. May be useful in assessing the effectiveness of chemotherapy or radiation treatment. 
Notes Testing performed via Abbott Alinity Immunoassay method. Results obtained with different assay methods should not be used interchangeably in serial testing. It is recommended that only one assay method be used consistently to monitor each patient's course of therapy.
CPT Code(s) 82378
Internal Comments 7/14/17 update stabilty - JK
5/2/18 removed - Re-baseline Order Code ( 4500426 ) Re-Baseline: CEA (Carcinoembryonic Antigen)   /   Result Code ( 4500426 ) RB CEA
4/17/18 added lith hep as alt and updated trans temp to ref - JK
Service Provided By Labcorp Oklahoma, Inc.
Lab Section Chemistry