How long before and after eating do I check my blood sugar? I have type 2 diabetes and have really gotten down to brass tacks about checking my blood sugar. At this time I am only checking in the mornings before taking my medications.
A person with diabetes can check blood glucose up to 30 minutes before eating and 2 to 3 hours after eating (if you are on pills, we recommend checking blood glucose 2 hours after eating; if you are on mealtime insulin, we recommend checking at 3 hours). The number of times you check depends on the type of medicine you take, your blood glucose control, and your exercise habits (people who exercise may need to check before and right after activity). For most people with type 2 diabetes, checking once to twice a day is enough, but remember to vary the times. Sometimes check before meals, sometimes 2 hours after meals. This will allow you and your provider to better understand your diabetes and see patterns at different times of day. Write down the numbers, take them when you see your provider, and ask about the numbers. Are they too high? Too low? Just right? Checking the numbers and looking for patterns of highs and lows is an important part of treating your diabetes and will help you and your doctor know if your treatment plan is working.