Checking blood glucose is more accurate to draw blood than to prick the finger.
Generally speaking, fingertip blood glucose is taken from the finger, taking blood inside the capillary to determine the blood glucose value, mainly applicable to diabetic patients or healthy people to monitor blood glucose on a daily basis. On the other hand, venous blood glucose is taken from the forearm to determine the blood glucose value, which is mainly used for the definitive diagnosis of diabetes suspects. Therefore, blood sampling is more accurate than finger sticking.
In addition, blood glucose value is affected by many factors, it is recommended to fast for 8~10 hours before measuring fasting blood glucose, avoid drinking and smoking during the measurement process, avoid strenuous exercise and emotional excitement.
If a patient finds abnormal blood glucose values after a blood glucose test, he or she should consult a specialist in a timely manner.