Geisinger Medical Laboratories Test Catalog

Order Display Name: Geisinger Epic Procedure Code Or ID CPT Code:  

CA 125

Geisinger Epic Procedure Code: LAB1910             Geisinger Epic ID: 19447

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 collection device is a 3.5 ml serum-separator tube. A 3 mL plasma separator tube is also acceptable.
Patient preparation:
Sample should not be drawn for two months after abdominal surgery and at least three weeks after the completion of primary chemotherapy.

Specimen processing instructions:
Allow serum to clot. Centrifuge to separate serum or plasma within 2 hours of collection. 
Transport temperature:
Refrigerated (preferred). Frozen specimen also acceptable.
Specimen stability:
Stable 5 days at 2-8° C, 6 months frozen.
Rejection criteria:
Stability limits exceeded.

Reference interval:
<= 38.1 U/mL
Additional information:
HAMA Warning: Patient specimens containing a human antimouse antibody may interfere with results.
CPT code(s):
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 125.
Roche Electrochemiluminescence Immunoassay. Patient results determined by assays using different manufacturers or methods may not be comparable.
CA125, Cancer antigen 125
Clinical significance:
The CA125 level can provide prognostic information in the follow-up management of patients with ovarian carcinoma. CA125 is not recommended as a cancer screening procedure to detect cancer in the general population.
Doctoral Director(s:)
Hoi-Ying Elsie Yu, PhD, DABCC, FADLM
Sheng-Ying (Margaret) Lo, PhD, DABCC    
Review Date: 02/13/2024

Performing Locations

Geisinger Medical Center

Performing laboratory: Automated Chemistry
Technical Lead: Megan Woodruff
Frequency: Daily, 1st shift, Monday-Saturday
Performed STAT? No
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