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Cancer Antigen-GI (CA 19-9)
0080461
Ordering Recommendation
Mnemonic
CA-GI
Methodology
Quantitative Electrochemiluminescent Immunoassay
Performed
Sun-Sat
Reported
Within 24 hours
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
ARUP Consult®
Disease Topics
Specimen Required
Patient Preparation
 
Collect
Serum Separator Tube (SST) or Plasma Separator Tube (PST). Also acceptable: Green (Sodium or Lithium Heparin), Lavender (EDTA), or Pink (K2EDTA). 
Specimen Preparation
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) 
Storage/Transport Temperature
Refrigerated. 
Unacceptable Conditions
Body Fluid (refer to Cancer Antigen-GI (CA19-9), Body Fluid, ARUP test code 0020746). Specimens collected in sodium citrate. 
Remarks
 
Stability
After separation from cells: Ambient: 5 days; Refrigerated: 2 weeks; Frozen: 3 months 
Reference Interval
0-37 U/mL
Interpretive Data
Thistest 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.

Note
CPT Code(s)
86301
Components
Component Test Code*Component Chart NameLOINC
0080461Cancer Antigen-GI (CA 19-9)83084-4
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • CA 19-9
  • CA-GI
  • Cancer Antigen 19-9
  • Cancer Antigen-GI
  • Carbohydrate Antigen
  • Carbohydrate Antigen 19-9
  • GI Cancer Antigen