A CA724 value of 15.5 μg/L is higher than normal and is serious if caused by a malignant tumor, but not serious if caused by a normal person and benign disease. CA724 is a tumor-associated glycoprotein, which is one of the markers for ovarian and gastrointestinal tumors.Normal value of CA724 should be <6.7μg/L. Elevated CA724 is found in 67% of ovarian cancer patients, 45% of gastric cancer patients, 47% of colorectal cancer patients, 40% of breast cancer patients and 42% of pancreatic cancer patients. However, elevated CA724 is also seen in some normal people and in people with benign gastrointestinal disease. If CA724 is caused by malignant tumors such as gastric, ovarian, or colorectal cancers, it is serious, and without timely treatment, invasion of surrounding tissues and distant metastasis may occur, which is life-threatening. If CA724 is elevated due to benign gastrointestinal diseases, it is not serious, and most of them can be significantly improved by active treatment, while some normal people can also have elevated CA724, so it is enough to complete relevant examinations to exclude disease factors and observe dynamically. CA724 generally needs to be combined with CA125, CEA and other tests to improve the sensitivity and specificity, so it is recommended that patients combine with other tumor markers and other test results such as imaging to make a comprehensive judgment.