Blood sugar is glucose, which is converted into glycogen by insulin hormone in the liver and muscles. Usually, blood glucose level is about 80-100 mg/100 mL of blood 12 hours after a normal meal. After taking carbohydrate rich diet, blood sugar level raised. Fasting glucose value of blood is 70-110 mg/dL (decilitre) and post prependial (after breakfast) is 110-140 mg/dL.