What Blood Sugar Range Is Safe for Type 1 Diabetics?

Safe pre-meal glucose levels range from 70 to 130 milligrams per deciliter, states WebMD. Glucose levels taken within two hours after a meal should be below 180 milligrams per deciliter. At bedtime and before exercise, the blood sugar level should be above 100 milligrams per deciliter. Fasting blood sugar levels, those levels taken after the individual has had nothing to eat or drink for at least eight hours, should be less than 100 milligrams per deciliter.