Why only ring finger is preferred for taking blood samples ?
Everyone in the daily life uses this finger at least. Hence, the risk entering an infection is less after giving an analyses and in case of the beginning of inflammatory process. For the same reason on a small pillow anonymous the skin is more thin than on other fingers. Besides, the ring finger structure is such, that the nervous terminations in comparison with other fingers, and a saturation capillaries is great. In some cases blood is taken from an average, or from a similar finger of the right hand.