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Test Code
CB199
Test Name
CA 19-9
Expected Turnaround Time
1 - 3 days
Clinical Utility
Monitor gastrointestinal, pancreatic, liver, and colorectal malignancies.
Specimen and Container Info

Specimen Types: Serum or Plasma

Collection Containers:

  • Gold Top, Serum Separator
  • Light Green Top, Plasma Separator
  • Red Top, Separator

  

Minimum Acceptable Volume:  0.8 mL
Processing and Submission Instructions

Separator tubes: Contains clot activator and gel for separating serum from cells, but not anticoagulant. Separate serum from cells as soon as the clot has formed (30 minutes). If specimen is centrifuged before clotting is complete, a fibrin clot will form on top of the cell. This may cause the gel barrier to not be intact and could cause improper separation of serum and cells, possibly affecting test results.

Tubes with anticoagulant: To ensure accurate test results, all tubes containing an anticoagulant or preservative must be allowed to fill completely. Attempts to force more blood into the tube by exerting pressure, as in collection with a syringe, will result in damage to the red cells (hemolysis).
Transport Instructions

Transport to the laboratory refrigerated. 
Stability Requirements

Room Temperature

8 hours

Refrigerated

7 days

Frozen

2 weeks

Freeze/Thaw Cycles

Thaw samples only once.

Methodology
Chemiluminescent Immunoassay
Reference Intervals

HNL Lab Medicine Chemistry Reference Intervals
Performing Location
Roble Road Core Laboratory
Testing Schedule
Routine, daily
The American Medical Association (AMA) Current Procedural Terminology (CPT) codes published by HNL Lab Medicine are guidelines and are intended for informational purposes only. CPT coding is the exclusive responsibility of the billing entity. View the Terms.
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