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CA 19-9

Important Note

*This test is orderable in Cerner as CA 19-9

Patient results determined by assays using different manufacturers or methods may not be comparable.

Performing Laboratory

Rutland Regional Medical Center Laboratory

Specimen Requirements

Specimen Type: Blood

Container/Tube: Light-green top (lithium heparin gel)

Preferred: Light-green top (lithium heparin gel)

Acceptable: Gold top, serum gel

Specimen Volume: Full tube

Specimen Minimum Volume: 1 mL

Collection Instructions:

1. Send specimen in original tube.

2. If there is a delay in transport of >1 hour, centrifuge tube.

Specimen Transport Temperature

Refrigerated

Day(s) Performed

Daily

Available STAT

Analytical Time:

1 day

Test Classification and CPT Coding

  • CPT: 86301
  • LOINC: 83084-4
  • EMR Order Code: L701140
  • EMR Result code: L802821

Additional Information

CA 19-9 values determined on patient samples by different testing procedures cannot be directly compared with one another and could be the cause of erroneous medical interpretations.  If there is a change in the CA 19-9 assay procedure used while monitoring therapy, then the CA 19-9 values obtained upon changing over to the new procedure must be confirmed by parallel measurements with both methods.

Methodology

Manufacturer: Roche Diagnostics

Analyzer: Cobas Pro’s

 Methodology: Electrochemiluminescence Immunoassay (ECLIA)