Accuracy of five cancer tests

The accuracy rate of cancer detection by tumor five items is not high, which cannot reach 30%. Most patients with tumor five items will not show an increase in tumor indicators. This tumor indicator should be tested accordingly. only for specific tumors, it may be positive. For patients after surgery, if the indicators show abnormal increase, it indicates that the patient has signs of recurrence and metastasis. For newly diagnosed patients, there is often no significant increase. After treatment, if the tumor index decreases significantly, it indicates that the treatment is effective.