Dental blood draws are usually performed for tests including routine blood tests, biochemical tests, infectious disease tests, and so on. The report of dental blood sampling usually has the normal reference value for each item, and there are usually hints in the report if it exceeds or falls below the normal reference value. 1. Blood routine: including the number of red blood cells, white blood cells and platelets. If the red blood cells increase, it may be various causes of dehydration caused by blood concentration, congenital cyanosis heart disease and pulmonary heart disease compensatory red blood cells increase. Red blood cell decrease may be aplastic anemia, hemolytic anemia. 2. Biochemical examination: including liver function and renal function test. If the serum uric acid, which reflects the renal function, is elevated with clinical significance, it may be primary gout, leukemia, myeloma, and renal impairment disease. 3. Infectious disease examination: including hepatitis B, hepatitis C antigen test, positive generally represent hepatitis B, hepatitis C. It is recommended to consult a professional doctor for specific dental blood reports.