Glycogen antibody 199 is a tumor marker, test referred to as CA199, is an oligosaccharide tumor-associated antigen, and its abnormal index can be related to digestive system diseases. Glycogen antibody 199 has an upper limit of 37.00u/ml, which is highly sensitive to pancreatic cancer in the digestive system, and its components are mainly distributed in the pancreas, bile duct epithelium and other parts of the human body; if the value of the test is mildly elevated, it can be seen in the inflammation of the digestive tract, and if the index is significantly elevated, it can be considered as a digestive system-related cancers such as pancreatic cancer, hepatobiliary cancer, gastric cancer, colorectal cancer, and so on. Glycogen antibody 199 can also serve as a prognostic indicator for surgery, which can be used to predict the stage of the tumor and to detect recurrence and the degree of difficulty and success of the treatment surgery; it is mildly elevated in non-tumor diseases, such as pancreatitis, cirrhosis of the liver, diabetes mellitus, and gallstones. If you want to know more about Glycoantigen 199 or want to undergo a related tumor marker test, you can go to the hospital and consult your physician.