CA724 is generally referred to as CA724, and its normal range is generally less than 6.9U/ml, but the reference indexes of hospitals in different places may be different, and it is recommended that the local hospitals should prevail.CA724 is high to 50.49U/ml if it is caused by malignant lesions, which is usually more serious, and it is recommended to consult a doctor in time. The high CA724 of 50.49U/ml may be caused by physiological factors or benign or malignant lesions. Physiological factors and benign lesions are usually not serious, while malignant lesions are more serious. CA724 is a marker for gastrointestinal and ovarian cancer. Elevated levels of CA724 can be seen in normal people, benign gastrointestinal diseases, gastrointestinal cancers, lung cancers and ovarian cancers, etc. The specificity of CA724 is not high, but it is complementary to CEA in diagnosing tumors, and the use of the two at the same time can improve the sensitivity and specificity of diagnosing gastric cancer. When CA724 is elevated, it is recommended to go to regular hospitals for consultation.