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HelpTest Code CA19-9 CA19-9
Synonyms/Keywords
Carbohydrate Antigen 19-9, CA 19-9
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 | Lithimum Heparin Plasma Separator Tube (PST) | Lithium Heparin Green Top Tube (GTT), Serum Separator Tube (SST), Red Top Tube (RTT) | 1 mL | 0.5 mL | 0.3 mL |
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Plasma/Serum | Ambient | 8 hours |
| Refrigerated | 2 days | |
| Frozen | >2 days |
Thaw Samples only once.
Rejection Criteria
Gross hemolysis.
Test Information
Submit diagnosis code on any Medicare/Medicaid patients. CA 19-9 is neither specific nor sensitive enough to be used as a cancer screen.
Interpretations
Serum markers are not specific for malignancy, and values may vary by method.
Reference Range Information
| Performing Location | Reference Range |
|---|---|
| Marshfield | < 35 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 |
|---|---|---|---|---|
| 86301 |
Outreach CPT Codes
| CPT | Modifier (if needed) |
Quantity | Description | Comments |
|---|---|---|---|---|
| 86301 |
Ordering Applications
| Ordering Application | Description |
|---|---|
| Cerner | CA 19-9 |