The CA 19.9 Serum Test measures the level of the carbohydrate antigen 19.9 (CA 19.9) in the blood. This test is primarily used as a tumor marker to monitor the progression or treatment response in pancreatic and gastrointestinal cancers. While not specific for diagnosing cancer, elevated levels of CA 19.9 can indicate malignancies or other conditions such as pancreatitis or bile duct obstruction. It is commonly used alongside other diagnostic tools for a comprehensive evaluation.

High CA 19.9 levels can signify serious conditions, such as pancreatic or bile duct cancers. This test aids in monitoring treatment efficacy and detecting cancer recurrence. It can also highlight benign conditions like pancreatitis or gallstones. Early detection and monitoring through the CA 19.9 Test help guide timely treatment and improve outcomes for affected individuals.

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