<prompt> Definition of Diabetes mellitus includes:Fasting blood glucose 126 mgdLRandom blood glucose 140 mgdLHbA1c 7Post prandial blood glucose 180 mgdL  <response>: a. Fasting blood glucose 126mgdLRef: Nelsons 20e p 2760-2780, Ghat 8e p 541-548Fasting blood glucose 12.6mgdL or 2 hr post prandia or rangdom glucose 200mgdL or HbA1c6.5 in presence of symptoms like polyuria and polydipsia are diagnostic of diabetes mellitus. 