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.
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

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.  

Compliance Category

FDA

Note
Hotline History
N/A
CPT Codes

86301

Components
Component Test Code* Component Chart Name LOINC
0080461 Cancer 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
Cancer Antigen-GI (CA 19-9)