Laboratory:
Chemical Pathology
Referral Laboratory:
MiChart Code:
CA 19-9 (Carbohydrate Antigen 19-9)
Soft Order Code:
CA199
Synonyms:
Cancer Antigen 19-9 Carbohydrate Antigen 19-9
Container:
SST tube
Normal Volume:
0.5 mL serum
Minimum Volume:
0.25 mL serum
Offsite Collection:
Collect blood in a red top or SST tube. Centrifuge, aliquot serum into plastic vial and refrigerate.
Onsite Collection (Michigan Medicine Hospitals Only):
Collect blood in a red top or SST tube.
Days Set Up:
Daily, 24 hours
Analytic Time:
4 hours
Reference Range:
*Reference ranges may change over time. Please refer to the original patient report when evaluating results.
<40 U/mL. Serum markers are not specific for malignancy, and values may vary by method.
Test Usage:
Potentially useful adjunct for diagnosis and monitoring pancreatic cancer; Maybe used for differentiating patients with cholangiocarcinoma and primary sclerosing cholangitis (PSC) from those with PSC alone.
Test Methodology:
Chemiluminescent Immunoassay
Additional Information:
Tested by a chemiluminescent immunoassay manufactured by Siemens Healthineers, performed on Atellica IM system. Results determined from different manufacturers and/or methods may not be comparable.
LOINC:
2009-9
CPT Code:
86301
Fee Code:
32042
Alternate Specimen:
Red Top Tube
Specimen Retention:
4 days
Test ID:
235