Test Overview
Clinical Utility
There is no critical value diagnostic of ovarian cancer. High CA 125 may occur in many benign and malignant conditions.
Method
Electrochemiluminescent immunoassay (ECLIA)
Analytical Platform
Roche Elecsys
Result Included
CA 125
Aliases/Synonyms
Cancer Antigen 125; CA125; CA-125
Specimen
Specimen Type
SerumVolume
Sample Volume
1 mL
Collection & Handling
Handling Information
Separate from clot as soon as possible.
Stability
| Refrigerated | Frozen |
|---|---|
| 5 days | 3 months |
Performance & Interpretation
Turnaround Time
3 days
Results
Name
Units
Reference Range
Conversion
-
CA 125U/mL0 - 35
Two or three fold increase over upper limit may be seen during menses.
Comment
Results obtained with Roche Elecsys assay. Results from other manufacturers cannot be used interchangeably.
Referral Location
Canada
Interface & Setup
HL7 Interface Codes
| Order Code | Result Name | Result Codes | Units |
|---|---|---|---|
| CA125 | CA 125 | 2747 | U/mL |
Test Version
Last Updated
2025-06-11