Amylase breaks down the starch and carbohydrate present in the food into simple forms that are readily usable by the body. The normal amylase levels in the blood is 25 to 160 U/L (units per liter). A condition of very low or high levels is associated with various health problems. Read more at Buzzle: http://www.buzzle.com/articles/amylase-levels-in-blood.html