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Cancer marker CA 19-9
The CA 19-9 tumor marker is a protein measured in the blood, often elevated in cases of gastrointestinal cancers, especially pancreatic cancer. This marker test is performed for diagnosis, monitoring treatment, and assessing disease progression and recurrence in cancers such as pancreatic cancer or colorectal cancer.
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CA 19-9 Tumor Marker Test
The CA 19-9 tumor marker is a protein measured in the blood that is often elevated in gastrointestinal cancers, especially pancreatic cancer. The test measures the CA 19-9 antigen, a carbohydrate produced in small amounts by epithelial cells, including those in the bile ducts, pancreas, stomach, colon, and salivary glands. The CA 19-9 marker is significant in diagnosing pancreatic cancer, as its concentration correlates with the disease's progression and is helpful in assessing the effectiveness of the implemented treatment.
When to Perform the Test?
The test is conducted for diagnosis, treatment monitoring, and assessment of disease progression and recurrence in cancers such as pancreatic and colorectal cancer. It is part of comprehensive pancreatic cancer diagnostics. The test is also used for postoperative evaluation of patients diagnosed with pancreatic cancer and as a preventive measure in patients with a genetic predisposition to pancreatic cancer.
Disease Entities
The CA 19-9 tumor marker is indicated for diagnosing conditions such as pancreatic cancer, colorectal and rectal cancer, stomach cancer, hepatitis, and cholecystitis.
Symptoms
CA 19-9 tumor marker testing is performed when symptoms such as epigastric pain, jaundice, nausea, vomiting, fatty stools, polydipsia (increased thirst), and polyuria (increased urine volume) are observed.