The main purpose of the finger prick blood test is to check the blood count or blood sugar. Routine blood test is a very common laboratory test in clinical practice. Routine blood test is mainly to check the red blood cell count, hemoglobin, white blood cell count and platelet count for abnormalities. Routine blood tests can provide a certain diagnostic basis for clinical diagnosis. It can also evaluate the treatment effect of the disease and guide the clinical use or discontinuation of medication. An elevated white blood cell count indicates a possible bacterial infection or hematologic disease. Decreased red blood cells and hemoglobin indicate the possibility of anemia. Decreased platelet count indicates that the patient is at risk for bleeding disorders. The main purpose of finger-prick blood glucose testing is to see if there are any abnormalities in the patient’s blood sugar.