Most clinical diseases can now be initially screened through blood tests. For example, routine blood tests can screen patients for inflammation and anemia. Biochemistry can test the patient’s liver and kidney function, as well as the presence of high blood lipids, low protein and other conditions. Urine routine can monitor whether there is protein in the patient’s urine and whether there is infection. For diabetic patients, when there is urine protein or urine sugar in the urine routine can further evaluate the kidney function damage. For tumor patients, blood tests can also be used to monitor tumor series in early stage, because tumor series monitoring is not only for pre-cancerous examination, but also for patients who have undergone surgery, tumor series monitoring can also monitor whether they have recurrence.