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Cancer Antigen 19-9
Test CodeCA19F
Alias/See Also
CA 19-9, 19-9, Cancer Antigen, Pancreas Antigen
CPT Codes
86301
Preferred Specimen
Light Green (PST)
Other Acceptable Specimens
Serum (Red) or Gold (SST) or Orange (OJ) or Tiger Top Serum
Instructions
Allow serum samples to clot completely before centrifugation.
Keep tubes stoppered at all times.
Within two hours after centrifugation, transfer at least 500 microliters of cell-free sample to a storage tube and tightly stopper.
Keep tubes stoppered at all times.
Within two hours after centrifugation, transfer at least 500 microliters of cell-free sample to a storage tube and tightly stopper.
Specimen Stability
- Store samples tightly stoppered at room temperature (15-30°C) for no longer than eight hours.
- If the assay will not be completed within eight hours, refrigerate the samples at 2-8°C.
- If the assay will not be completed within 48 hours, or for shipment of samples, freeze at -20°C or colder. Thaw samples only once.
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis, Lipemia
Methodology
Beckman DXI
Setup Schedule
24x7
Reference Range
0-35 U/mL
Clinical Significance
CA 19-9 is used to help differentiate between cancer of the pancreas and other conditions such as pancreatitis and to help monitor cancer treatment.
Performing Laboratory
CRMC Laboratory