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Test Code LAB4050 CARCINOEMBRYONIC ANTIGEN (CEA)

Specimen Type

Preferred Specimen:  Lithium Heparin Tube (Mint Green Top, Dark Green Top)
Alternative Specimen: Serum (SST, Gold, Corvac, Tiger, Red Top Tube)

 

Important: Lithium Heparin results are 7-8% higher than serum results. Use the same specimen type for serial measurements.

 

Specimen Volume

1 mL

Minimum Volume

0.5 mL

Turnaround Time

STAT: 1 hour
Routine : 4 hours

Test Schedule

Daily

Sample Stability

Room Temp: N/A
Refrigerated: 7 days
Frozen: N/A

Specimen Processing

Serum samples should be allowed to clot completely. Separate serum from cells ASAP and transport refrigerated.

Method

Immunoassay

Reference Ranges

<5.00 ng/mL

Reporting Limit

Measuring Range 1.73  - 1,500.00 ng/mL

Reporting Limits: 1.73 – 15,000.0 ng/mL

If result after a 1:10 dilution is greater than 15,000.0 ng/mL, report out >15,000.0 ng/mL

Synonyms

CEA; CARCINOEMBRYONIC ANTIGEN

LOINC Code

83085-1

IMO Code

IMO-PROC-30136052

CPT Codes

82378

Rejection Criteria

Grossly hemolyzed specimens.