CA 19-9 Tumor Marker
- Cancer Antigen 19-9
The presence of high levels of the antigen CA 19-9 in the blood is a tumor marker, and indicates either liver or pancreatic cancer. Lower blood levels are also seen with non-cancerous illnesses or diseases such as cystic fibrosis, cirrhosis, gallstones, inflammatory bowel disease, or pancreatitis. This test is not used to screen or diagnose cancer, but to monitor disease progression and how well you are responding to treatment.
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