CA 19-9
A CA 19-9 test measures the amount of a protein called CA 19-9 (cancer antigen 19-9) in a sample of your blood. CA 19-9 is a type of tumor marker. Tumor markers are substances made by cancer cells or by normal cells in response to cancer.
Source: MedlinePlus, U.S. National Library of Medicine
Normal range
No published reference range from a named lab yet.
What an abnormal result can be associated with
- A high result
- Elevated circulating CA19-9 concentration
Associations from LOINC2HPO (Human Phenotype Ontology). This is reference information, not a diagnosis — only a clinician can interpret your result in context.
Details
- Sample
- Serum or plasma · LOINC
- Listed under
- Breast Cancer · Cancer · Colorectal Cancer · Leukemia · Liver Cancer · Lung Cancer · Lymphoma · Male Breast Cancer · Multiple Myeloma · Ovarian Cancer · Pancreatic Cancer · Prostate Cancer
- Code
- LOINC 24108-3 · [arb'U]
- Also known as
- Cancer Ag 19-9, Tumor marker, CA