What are the five tumor markers?

Tumor markers generally refer to blood tests, including alpha-fetoprotein, carcinoembryonic antigen, carbohydrate antigen, and squamous cell carcinoma-associated antigen. Most tumor markers are not specific, and elevated test results do not necessarily indicate malignant tumors. Most other benign diseases and inflammation may also cause tumor markers to be slightly higher than normal. However, if the results of the examination are significantly higher than normal, especially in the case of more than twice the normal value, it is necessary to be alert to the possibility of malignant tumor. Tumor markers cannot be used as the basis for diagnosis. It is necessary to combine other imaging examinations to observe the site of the disease.