CA19-9 value of 41.8u/ml is generally not serious. CA19-9 is called glycan antigen 199, and its normal value in the human body is less than 37.00 u/ml, and mild elevation can be seen in some inflammatory diseases of the gastrointestinal tract, so 41.8 u/ml is generally not serious. Glycoantigen 199 is a glycolipid on the cell membrane, belongs to oligosaccharide tumor-associated antigen, is a new tumor marker, among all tumor markers, Glycoantigen 199 is the most sensitive marker for pancreatic cancer. A value of 41.8 u/ml for Glycoantigen 199 is only mildly elevated and can be seen in chronic pancreatitis, gallstones, cirrhosis, renal insufficiency, diabetes and other diseases. If the value of Glyco Antigen 199 is significantly higher than the normal value, it suggests that the patient may suffer from pancreatic cancer, liver cancer, gallbladder cancer, bile duct cancer, stomach cancer, colorectal cancer and other tumors. If the value of Glycoantigen 199 is found to be 41.8u/ml, please consult your doctor and follow the doctor’s instruction to improve the follow-up examination and treatment.