The screening of novel coronavirus requires more steps, generally including blood biochemical tests, routine blood tests, and coagulation tests, viral tests, etc. The confirmatory tests are still viral nucleic acid tests and viral gene sequencing. Biochemical tests can reveal a normal or slightly decreased white blood cell count and a possible decrease in lymphocyte count, both of which are very important diagnostic bases. Coagulation function may be abnormal at this time. However, each patient’s degree of illness is different, and each person’s resistance is also different, so the test results cannot be generalized, but still need to make a comprehensive judgment according to the patient’s physical condition. During this period, patients need to protect themselves and their families, stay away from the house and isolate themselves as much as possible. In the early stages of the development of novel coronavirus pneumonia, patients may experience a decrease in the number of lymphocytes in the blood count. If you need to go out, be sure to wear a medical surgical mask for safety. You should also drink more water, get more rest, wash your hands regularly, and open windows on weekdays. Content source: Dr. You Lai