For a typical healthy adult, a normal blood sugar level after eating is below 140 mg/dL. Diabetic individuals usually have a blood sugar level greater than 140 mg/dL 2 hours after eating.
Blood sugar levels pertain to the total amount of glucose present in the blood, which vary throughout the day. The main factors that influence blood sugar levels include the amount of physical activity done during the day, at what time a person eats and the type and quantity of food eaten.
Prior to a meal, blood glucose level is normally between 70 and 99 mg/dL. For adult patients with Type 1 diabetes, blood sugar should range from 90 to 130 mg/dL while the target level for Type 2 diabetics is between 70 and 130 mg/dL. After meals, the recommended blood sugar level for both Type 1 and Type 2 adult diabetic patients is below 180 mg/dL.