CA 19.9
General Information
Lab Name
CA 19.9
Lab Code
CA199G
Epic Name
CA 19-9 [CA199]
Synonyms
CA19-9, Cancer Antigen 19-9, Carbohydrate Antigen 19-9
Components
| Code | Name |
|---|---|
| CA199 | CA 19.9 (Beckman) |
| C199RD | CA 19.9 (Roche) |
Interpretation
Reference Range
See individual componentsRef. Range Notes
Patient results determined by assays using different manufacturers, instruments, or methods are not comparable.
Interferences and Limitations
Biotin supplements can cause falsely low values. See Limitations of Laboratory Testing for details.
Ordering & Collection
Specimen Type
Collection
UW Location:
- Preferred specimen: 4 mL blood in GOLD SST tube.
- Acceptable specimen: 4 mL blood in RED TOP tube, ORANGE RST tube.
FHCC Locations:
- Preferred specimen: 4 mL blood in ORANGE RST tube.
- Acceptable specimen: 4 mL blood in GOLD SST tube, RED TOP tube.
Quantity
requested: 1.0 mL
minimum: 0.25 mL
Processing
Note: Prepare two 1 mL serum aliquots.
- Send one aliquot refrigerated to Central Lab.
- Send the second aliquot frozen to Montlake.
Storage stability:
- Room temperature: stable for up to 8 hours.
- Refrigerated (2–8 °C): stable for up to 7 days.
- For longer storage: store at -20 °C or colder for up to 3 months if testing cannot be completed within 7 days.
- Important: freeze only once (do not refreeze).
Note: Serum must be removed from SST or RST prior to storage.
Performance
LIS Dept Code
Chemistry, Automated Panels (CHA)
Performing Location(s)
| CL |
Renton Core Lab
206-520-4600 Clinical Lab, Room 170 |
|
|---|---|---|
| FHCC |
Fred Hutch Alliance Lab
206-606-1088 825 Eastlake Ave, Seattle, WA 98109 |
Fax: 206-606-2027 Includes satellite labs: |
| UW-MT |
Chemistry, Automated
206-520-4600 Clinical Lab, Room NW220, |
Frequency
Daily
Available STAT?
No