Ordering Recommendation
Mnemonic
Methodology
Quantitative Electrochemiluminescent Immunoassay
Performed
Sun-Sat
Reported
Within 24 hours
New York DOH Approval Status
Specimen Required
Serum Separator Tube (SST) or Plasma Separator Tube (PST). Also acceptable: Green (lithium heparin), Lavender (K2EDTA or K3EDTA), or Pink (K2EDTA).
Allow specimen to clot completely at room temperature. Separate from cells ASAP or within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.5 mL)
Refrigerated.
Body Fluid (refer to Cancer Antigen-GI (CA19-9), Body Fluid, ARUP test code 0020746). Specimens collected in sodium citrate.
After separation from cells: Ambient: 5 days; Refrigerated: 2 weeks; Frozen: 3 months
Reference Interval
Effective February 22, 2022
Less than or equal to 35 U/mL
Interpretive Data
This test uses Roche CA 19-9 electrochemiluminescent immunoassay. Results obtained with different test methods or kits cannot be used interchangeably. CA 19-9 is useful in monitoring pancreatic, hepatobiliary, gastric, hepatocellular, and colorectal cancer. CA 19-9 value regardless of level, should not be interpreted as absolute evidence of the presence or absence of malignant disease.
FDA
Note
Hotline History
Hotline History
CPT Codes
86301
Components
Component Test Code* | Component Chart Name | LOINC |
---|---|---|
0080461 | Cancer Antigen-GI (CA 19-9) | 83084-4 |
Aliases
- CA 19-9
- CA-GI
- Cancer Antigen 19-9
- Cancer Antigen-GI
- Carbohydrate Antigen
- Carbohydrate Antigen 19-9
- GI Cancer Antigen