Home
HelpTest Code CA-125 CA 125
Useful For
The primary role of CA-125 is to monitor reoccurrence of possible tumors following therapy in subjects diagnosed with ovarian carcinoma.
Synonyms/Keywords
Cancer Antigen-125, Ovarian Cancer Antigen, CA125
Specimen Requirements
| Fasting Required | Specimen Type | Preferred Container/Tube | Acceptable Container/Tube | Specimen Volume | Specimen Minimum Volume (allows for 1 repeat) |
Pediatric Minimum Volume (no repeat) |
|---|---|---|---|---|---|---|
| No | Plasma/Serum | Lithium Heparin Plasma Separator Tube (PST) | Lithium Heparin Green Top Tube (GTT), Serum Separator Tube (SST), Red Top Tube (RTT) | 0.5 mL | 0.4 mL | 0.3 mL |
Collection/Processing Instructions
Samples collected in a RTT must be removed from the clot within one hour for storage or transport.
Samples collected in gel barrier tubes must be removed from the primary tube prior to transporting to Marshfield.
Do not send the primary collection tube.
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Plasma/Serum | Ambient | 8 hours |
| Refrigerated | 2 days | |
| Frozen | >2 days |
Interferences
Human Anti-Murine Antibodies (HAMA) may develop leading to test interference in patient receiving murine-based agents for chemotherapy or tumor-imaging studies.
Reference Range Information
| Performing Location | Reference Range |
|---|---|
| Marshfield | ≤ 30.2 U/mL |
Marshfield Labs Performing Department
Marshfield Labs Chemistry
Performing Information
| Performing Location | Day(s) Test Performed | Analytical Time | Methodology/Instrumentation |
|---|---|---|---|
| Marshfield | Monday through Friday | Less than 2 hours | Beckman Coulter DXI |
CPT Codes
| CPT | Modifier (if needed) |
Quantity | Description | Comments |
|---|---|---|---|---|
| 86304 |
Outreach CPT Codes
| CPT | Modifier (if needed) |
Quantity | Description | Comments |
|---|---|---|---|---|
| 86304 |
Ordering Applications
| Ordering Application | Description |
|---|---|
| Cerner | CA 125 |