Blood markers for pancreatic cancer often show multiple abnormalities. Pancreatic cancer itself can lead to an increase in related tumor markers. The two most common markers are carcinoembryonic antigen and carbohydrate antigen 19-9, especially carbohydrate antigen 19-9, which has a certain specificity. If pancreatic cancer progresses further, leading to compression of the biliary system, corresponding jaundice indicators can increase. This includes an increase in total bilirubin and direct bilirubin, as well as alkaline phosphatase and gamma-GTP. The most common metastasis site for pancreatic cancer is the liver, and after liver metastasis occurs, corresponding liver transaminases can increase.