As incidence of diabetes is increasing, it become a routine to encounter diabetics in every surgical field. Whether it is cataract surgery, laparoscopic cholecystectomy, hysterectomy or cancer surgeries, screening for diabetes is a norm. Diabetes affects pathogenesis of many conditions requiring surgeries like diabetic foot, pyelonephritis and renal abscess, coronary bypass surgeries. Raised blood glucose also affects the course of operation and post-operative course. It affects the healing, infection and other complications. So it is desirable to well maintain the glucose level, so that neither person get ill effect like ketoacidosis or hyperosmolar coma, renal failure, infections nor he get hypoglycemia which adversely affects the life style of the recovering patients. (2, 3)