Blood sugar levels can fluctuate somewhat, but there are specific ranges that indicate healthy or non-healthy levels.
• Blood sugar less than 100 mg/dl (milligrams per deciliter) after fasting for at least eight hours is a normal range. Your levels should be less than 140 mg/dl two hours after eating.
• Your blood sugar is often lowest during the day just before meals. If you don't have diabetes, your blood sugar level will likely be around 70 to 80 mg/dl. Some people may find that 60 is normal, while others are normal at 90.
• Use a blood glucose monitor to check your levels and if they appear to be abnormal or extremely high or low, contact your doctor right away.