Terminal blood is blood taken from the fingertips, which is more painful, while venous blood is blood taken from the veins. The volume of blood taken from a vein is mostly between 1-2ml, which makes it easy to mix the specimen evenly on the instrument, and as the techniques used to process and analyze the specimens produced become more and more advanced, there are fewer and fewer factors of human influence, making the results of the assay more stable and accurate. Therefore, the general accuracy of drawing venous blood is greater and is more valuable for diagnosis and treatment. And the peripheral blood is mainly for blood glucose testing, the first thing is to sterilize, do not touch dirty things, do not wash your hands immediately, otherwise infection is easy to occur. For fingertips with wounds, nail infections, redness and skin diseases, it is also necessary to avoid the injured finger.