A CA724 value of 26.84 U/mL is classified as a high CA724, but it does not determine whether it is serious or not. If it is caused by a malignant tumor, then the situation is more serious. However, if it is related to benign diseases, then as long as it is treated in time, it can usually return to normal. CA724 is a common tumor marker, mainly reflecting gastrointestinal tumors and ovarian cancer, and its normal value is about 0-6 U/mL. If the actual CA724 value is 26.84 U/mL, then it means that CA724 is high. The elevation may be caused by malignant tumor diseases, such as stomach cancer, pancreatic cancer, ovarian cancer and lung cancer, which are more serious cases. However, it may also be related to benign diseases, such as hepatitis, cirrhosis, ovarian cysts and pancreatitis. Therefore, it is not possible to determine whether the CA724 value of 26.84 U/mL is serious or not, and it is necessary to combine it with other examinations to make a detailed judgment, such as imaging examination and endoscopy. If there is no obvious organic lesion, it can be observed dynamically for the time being. In daily life, eat more fresh vegetables and fruits, develop healthy sleeping habits, and have more rest. There is no need to be overly alarmed, after the discovery of elevated values of CA724 need to be consulted in the regular hospital to follow the doctor’s instructions for further clarification of the examination.