Depending on an individual’s goals and needs, the blood sugar targets can vary, especially for people with type 1 diabetes. As per the general guidelines of the American Diabetes Association, your blood sugar should be before meals: For adults – from 90 to 130 mg/dL For children ( 13 to 19 years old) – from 90 to 130 mg/dL For children ( 6 to 12 years old) – from 90 to 18 mg/dL