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Test Code LAB6105    CEA, Body Fluid

Performing Laboratory

Barnes-Jewish Hospital

Methodology

Cobas ECLIA electrochemiluminescence

 

Results from different manufacturers or methods may not be comparable. Serial testing should be performed using the same method.

 

Literature References:

Package insert: Carcinoembryonic Antigen. CEA. Roche Corporation 09/2020

Specimen Requirements

Specimen Type: Pancreatic cyst fluid

Container/Tube: Mint green tube

Specimen Volume: 2mL

 

Indicate fluid type on specimen container

Day(s) Test Set UP

Monday through Sunday

 

Turnaround Time:

Stat: 1 hour after receipt in laboratory

Routine: 2 to 4 hours after receipt in laboratory

Reference Values

Concentration ≥ 5 ng/mL is indicative of non-mucinous cyst.

Concentration ≥ 105 ng/mL is indicative of mucinous cyst.

 

Literature References:

A lower Cyst Fluid CEA cut-off Increases Diagnostic Accuracy in Identifying Mucinous Pancreatic Lesion. J of Pancreas, 2015;16:271-77.

Suboptimal Accuracy of Carcinoembryonic Antigen in Differentiation of Mucinous and Nonmucinous Pancreatic Cysts: Results of large multicenter study. Gastrointest Endosc 2015; 82:1060-69.

Test Classification and CPT Coding

82378

Additional Information

For BJH Laboratory Use Only

Alternate Tube Type: Red top tube

Analyte Stability: Not established; performed upon receipt

 

Laboratory Processing Instructions: Test performed in BJH Core lab. If specimen is received in a VACUTAINER, check procedure to confirm suitability. Centrifuge upon receipt. Apply blue tape to specimen aliquot tube. Deliver to the Cobas 8000 for analysis. Completed specimens are stored frozen for 30 days.

LOINC Code Information

12513-3