Fingerstick blood sampling is usually reliable. In general, there is little difference between the results of peripheral blood taken by finger sticking and those of venous blood collection, which differ in the location of the sample. Finger prick is a peripheral capillary blood sampling method, while venous blood sampling is usually done in the middle of the elbow. Samples can be taken as part of the physical examination data during the physical examination. The main reason for choosing finger-pricked blood collection is for clinical convenience, because this method can be used when children are young or when it is difficult to draw blood from superficial veins. When taking blood for laboratory tests, you should follow the arrangement of the medical staff, choose the appropriate way to take samples, and after taking samples, do a good job of stopping the bleeding, and put the used swabs and other things in the prescribed place, do not throw away. Finger blood sampling is commonly used in clinical routine blood, rapid blood glucose examination, pay attention to finger blood sampling should not squeeze the finger, so as not to affect the normal value. If you feel unwell after blood drawing, you should consult the doctor in time and take active treatment so as to avoid delaying your condition.