Normal blood sugar levels can vary depending on the time of day and the individual's health status. Typically, a fasting blood sugar level (measured after an overnight fast) should be between 70 to 99 mg/dL. Postprandial blood sugar levels (measured two hours after eating) should usually be less than 140 mg/dL. For individuals with diabetes, the target ranges may be different and should be personalized by healthcare providers.
