Synonyms: CEA

CPT 4 Code: 82378  Limited Coverage Test (NCD)

Test Order Mnemonic: CEA

Lab: Clinical Chemistry

Request Form: Special Chemistry Form 2

Collection: Routine venipuncture; AM collection preferred

Storage Instructions: Centrifuge, separate serum from cells, store serum at 2-8°C and deliver to lab within 24 hours. If delayed more than 24 hours, freeze serum.

Causes for Rejection: Blood collected in any anticoagulated tube.

Availability: Samples are received 24 hours per day.

Turnaround Time: 24 - 48 hours.

Specimen: Blood

Volume: 7 mL blood

Special Instructions: The test can be ordered only once per patient admission for inpatients and once per month for outpatients. Additional requests must have the approval of the laboratory director.  Due to change in instrumentation, SERUM only can be accepted to run this test. 

Minimum Volume: 0.4 mL serum

Container:  SST (gel barrier) or plain red-topped tube

Reference Ranges: 0-10 ng/mL

Critical Values: >10 ng/Ml

Test Method: Chemiluminescence

Reviewed/revised March 2008 by D. Davis