Cancer Antigen 19-9 Test (CA 19-9)
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About Our Cancer Antigen 19-9 Test (CA 19-9)
Note: Fasting is not required for this test.
Cancer Antigen 19-9 (CA 19-9) is a used as a tumor marker in the detection of pancreatic or gastrointestinal cancer. This blood test detects Cancer Antigen 19-9 levels.
CA 19-9 is found in small amounts in the blood of healthy individuals. Elevated levels may indicate pancreatic cancer.
High CA 19-9 levels are most commonly associated with pancreatic cancer, other cancers, such as colorectal, lung and gallbladder cancers, can also cause elevated levels. Additionally, high CA 19-9 levels do not always indicate cancer. Elevated CA 19-9 levels can also be caused by non-cancerous conditions like gallstones, a blockage of the bile duct (jaundice), pancreatitis, cystic fibrosis and liver disease.