Jan 30, 2018




Clinical Hub,Tools & Resources,UWHC Lab Test Directory,Chemistry

Carcinoembryonic Antigen

Carcinoembryonic Antigen (CEA) Chemistry Lab Test

Name: Carcinoembryonic Antigen

Test Name: Carcinoembryonic Antigen

Health Link Test Code: CEA

LIS Test Code: CEA

CPT Code(s): 82378

Methodology: Chemiluminescent Immunoassay

Days Performed: Daily, 24 hours.

In-Lab Turnaround Time: 4 hours.

Stat In-Lab Turnaround Time: Not available stat.

Specimen: Blood

Collection Container: Red cap with yellow ring (SST)

Also Acceptable: Red top

Collection Volume: 1 mL

Pediatric Collection Volume: 0.5 mL

Stability Refridgerated:

7 days removed from cells, clot, or gel

24 hours on gel

Stability Frozen:

>7 days

Sample Analyzed: Serum

Testing Volume: 0.5 mL

Pediatric Testing Volume: 0.15 mL

Specimen Processing:

Centrifuge. If a complete barrier has not formed, transfer cell-free serum to plastic vial. Refrigerate.

Specimen Transport:

Transport specimen to the laboratory. Transport with coolant pack if coming from clinic location.


0 days and up:  <5.0 ng/mL


CEA levels in smokers may be higher.

Interpretation Type: Reference Interval

Test Limitations:

The Abbot ARCHITECT CEA assay should not be used as a cancer screening test.

Results may be affected if patient has developed heterophilic antibodies due to exposure to animal based protein.

A high dose hook effect is not seen in results up to 60,000 ng/mL.

Additional Information:

The Abbott ARCHITECT CEA method is used.  Results obtained with different assay methods or kits cannot be used interchangeably.