Generally speaking, all departments can prescribe routine blood tests, and if you simply have routine blood tests, it is recommended to consult the hematology department. Routine blood test is one of the three routine clinical tests, which mainly includes the examination of red blood cells, white blood cells, platelets, hemoglobin and other blood components. As a department specializing in the diagnosis and treatment of blood system diseases, hematology usually analyzes blood routine more accurately and professionally. Generally, fasting is not required before the routine blood test because eating has less effect on the results of the routine blood test. If you are taking medication, you need to inform your doctor in time and decide whether you need to stop taking the medication temporarily under the doctor’s guidance. Clothing is recommended to wear loose clothing to facilitate blood drawing, while keeping a relaxed mood without excessive tension. If there are abnormal values in the routine blood test, it is recommended to consult the hematology department in time, so that further examination can be done to clarify the cause under the guidance of the physician and scientific treatment can be taken.