How Often To Measure Blood Glucose. Check at least once per day (at different times of the day) to learn the effects of meals, exercise and medications on blood sugar. Experiencing an illness known to cause hyperglycemia (for example, an infection) check two or more times per day.
When people know how to interpret the results, blood glucose testing is usually regarded as a substantial benefit. Target ranges may differ depending on your age, duration of diabetes, the type of medication you are taking and if you have any other medical problems. Blood glucose levels are measured in millimoles per litre of blood (mmol/l).