It is well known that temperature affects the parameters of the nerve conduction studies. The purpose of this study is to determine variability of the skin temperature in the different areas of the hand at room temperature. Using Viking IV the temperature was measured at 12 locations in the hand. The average temperature was over 34℃, and the difference among subjects ranged from 2.7 to 4.9℃. We recommended that on nerve conduction studies the hand temperature should be checked and maintained at 34℃ or above preferably at the mid palm area.