Cancer Antigen 125; CA125; CA-125
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CA 125, Serum
Test ID: CA125
Orderable by Ontario ND
Test
Aliases/Synonyms
Method
Electrochemiluminescent immunoassay (ECLIA)
Platform
Roche Elecsys
Report Includes
CA 125
Specimens
Serum
Clinical Utility
There is no critical value diagnostic of ovarian cancer. High CA 125 may occur in many benign and malignant conditions.
Test Version
11-Jun-2025
Specimen
Specimens
Serum
Sample Volume
1 mL
Collection & Handling
Handling Information
Separate from clot as soon as possible.
Stability
| Refrigerated | 5 days |
|---|---|
| Frozen | 3 months |
Test Version
11-Jun-2025
Performance / Interpretation
Method
Electrochemiluminescent immunoassay (ECLIA)
Platform
Roche Elecsys
Turnaround Time
3 days
Results
| Name | Units | Reference Range | Conversion Factor | |
|---|---|---|---|---|
| CA 125 | U/mL |
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Results obtained with Roche Elecsys assay. Results from other manufacturers cannot be used interchangeably.
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Test Version
11-Jun-2025
Interface / Setup
HL7 Interface Codes
| Order Code | Result Codes | Units |
|---|---|---|
| CA125 | 2747CA 125 | U/mL |
Test Version
11-Jun-2025