Suggested Self-testing Times and Goals When should I test my blood glucose? This testing schedule is most appropriate for anyone with type 2 diabetes on oral medication. Also, it is very important to regularly chart your blood glucose levels. Click here to get a sample diabetes log. First thing in the morning before you have anything to eat or drink. (This is called fasting, or abstaining from eating or in some cases drinking overnight for a person with diabetes.) Before your largest meal of the day Two hours after the first bite of the largest meal of the day What is the target range for my blood glucose? Your blood glucose should be within the 70 - 130 mg/dl range after fasting and before meals. Your blood glucose should be less than 180 mg/dl two hours after the start of meals. When should I notify my physician? Call your doctor if your blood glucose is greater than 250 for two days in row. Call your doctor if you notice that more than half of your blood glucose readings are out of the target ranges. What should I do if my blood glucose is suddenly out of range? Think about changes in your diet or normal schedule that would cause your blood glucose to be out of range and make note of it on your log sheet or log book. Pay special attention to your blood glucose around that same time for the next few days to see if there is a pattern.