Everyone has some sugar in their blood. The normal amount of sugar in the blood ranges from about 70 to about 120 in people who don't have diabetes. Blood sugar goes up after eating, but returns to the normal range in 1 or 2 hours.
A good blood sugar range for most people with diabetes is from about 70 to 150. This is before a meal--like before breakfast or 4 to 5 hours after you last meal. Your blood sugar should be less than 200 about 2 hours after your last meal.
The picture below shows what ranges of blood sugar are good, too low, and too high.
Remember: Everyone is different. A good blood sugar range for someone else may not be the best for you. For example, a blood sugar of 80 may be too low for some people. Ask you doctor what the best range of blood sugar is for you.