Ordering Recommendation

New York DOH Approval Status

This test is New York state approved.

Specimen Required

Patient Preparation
Collect

Serum Separator Tube (SST) or Plasma Separator Tube (PST). Also acceptable: Green (lithium heparin), Lavender (K2EDTA or K3EDTA), 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

Methodology

Quantitative Electrochemiluminescent Immunoassay

Performed

Sun-Sat

Reported

Within 24 hours

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.  

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)