For someone without diabetes, a fasting blood sugar on awakening should be under 100 mg/dl. Before-meal normal sugars are 70-C99 mg/dl. --Postprandial-- sugars taken two hours after meals should be less than 140 mg/dl. ... There is also a long-term glucose test called a hemoglobin A1c, HbA1c, or just A1C.read more >>