Tumor markers of digestive system include carcinoembryonic antigen, glycoantigen 724, glycoantigen 199, glycoantigen 125 and so on.
1. Carcinoembryonic antigen: it is a representative tumor marker for digestive system tumors, with normal value <34.5μg/L. If it is obviously elevated, it is necessary to be on high alert for gastric cancer, esophageal cancer, colorectal cancer and so on.
2. Glycoantigen 724: within the range of normal value＜6.9U/ml, if it increases greatly, it needs to be alert to the occurrence of gastric cancer.
3. Glycoantigen 199: a suggestive marker for colon cancer and rectal cancer, once it exceeds 27U/ml by 5-10 times, it needs to be taken seriously.
4. Glycoantigen 125: the normal value is <35U/ml, if there is obvious increase, it is necessary to be alert to gastric cancer, intestinal cancer and other malignant tumors.
Tumor markers have low specificity and can be elevated in some benign diseases. They are only used as early screening and auxiliary diagnosis of cancer, but not as a means of confirming the diagnosis of the disease. It is recommended to further improve the relevant examinations to make a clear diagnosis in order to avoid delaying the condition.