Many people go to the hospital for regular check-ups every year. Some people are told that the quantitative level of carcinoembryonic antigen is high when they go to the hospital for check-ups, and many of them are worried that they are suffering from cancer. High carcinoembryonic antigen is a marker of tumor, and in many cancer processes, elevated carcinoembryonic antigen occurs, such as breast cancer, bowel cancer and other diseases. However, the specificity of carcinoembryonic antigen is not strong, so it cannot be said that high quantitative carcinoembryonic antigen is cancer, but it may also be seen in diabetes, colon polyps, pancreatitis and other diseases, but its value is not very high, generally speaking, carcinoembryonic antigen is not more than 20ng per liter. If the result of the recheck still does not exceed 20ng per liter, it may be a false positive, which is not caused by malignant tumor, so do not pay too much attention to it. If you have symptoms of discomfort and the quantitative level of carcinoembryonic antigen rises sharply, far more than 20ng per liter or even hundreds of ng, it is highly suspected to be a malignant tumor of the digestive tract and needs to be combined with other tests to further confirm the diagnosis. If you find that you are indeed a malignant tumor, you should go to the hospital for diagnosis and treatment in time, so as not to miss the best time for treatment and make your condition more and more serious. Do elevated tumor markers mean cancer? Elevated tumor markers do not necessarily mean cancer. Relying on tumor marker values alone cannot accurately determine the existence of cancer, but the key is to find out the real cause of the increase of a certain tumor marker. Carcinoembryonic antigen, alpha-fetoprotein, glycoprotein, squamous epithelium-related antigen, neuroendocrine-related antigen, prostate-related antigen, EB and HPV virus-related antibodies are all tumor markers. The following are commonly used in current medical screening tests: carcinoembryonic antigen (CEA), alpha-fetoprotein (AFP) and glycoprotein antigen.