Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

Test Name: Sunquest Test Code Epic Procedure Code Or ID CPT Code:  

CA 19-9

ORDERING INFORMATION:
Sunquest Test Code:
CA1909      Geisinger Epic Procedure Code: 86301         Geisinger Epic ID: 19446

SPECIMEN COLLECTION
Specimen type:
Serum (preferred) or plasma.
Preferred collection container:
Alternate Collection Container:
3 mL green/yellow-top (plasma separator) tube
Specimen required:
1 mL serum or plasma; minimum 0.5 mL.
Special notes:
Preferred specimen is serum in a 3.5 mL serum-separator tube. Plasma in a 3 mL plasma separator tube is also acceptable.

SPECIMEN PROCESSING
Specimen processing instructions:
Allow serum to clot. Centrifuge serum or plasma at 1100-2000 g for a minimum of 10 minutes. 
Transport temperature:
Refrigerated (preferred). Frozen specimen also acceptable.
Specimen stability:
Refrigerated: 5 days. Frozen: 3 months.
Rejection criteria:
Stability limits exceeded.

TEST DETAILS
Reference interval:
< 35 U/mL.
Additional information:
HAMA (Human Anti-Mouse Antibodies) interfere with this test. Patients who have been treated with mouse monoclonal antibodies should not be tested with this procedure.
CPT code(s):
86301
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.  The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:
Cancer antigen 19-9.
Methodology:
Electrochemiluminescence Immunoassay
Synonyms:
Cancer antigen 19-9
Clinical significance:
A large percentage of patients wtih gastrointestinal tumors (such as pancreatic, liver, gastric, colorectal tumors) and some other malignancies have been shown to have elevated serum or plasma CA19-9 levels. CA19-9 levels may be useful for monitoring disease activity predicting relapse following treatment. CA19-9 should not be used as a screening test.
Doctoral Director(s:)
Hoi-Ying Elsie Yu, PhD, DABCC
Sheng-Ying (Margaret) Lo, PhD, DABCC    
Review Date: 11/05/2018

Performing Locations

Geisinger Medical Center

Performing laboratory: Automated Chemistry
Technical Lead: Mariana Moyer, Jared Shepherd
Frequency: Daily
Performed stat? No
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