When to Check Your Blood Sugar

Your diabetes treatment and self-management plan will determine how often and when to check your blood sugar levels.

How Often to Test

Check your blood sugar levels when you need information to make decisions. How you use the information from testing is more important than how often you test. Whatever you decide is the best testing schedule for you, be sure you have a plan for what to do with the information from your tests.

Many people find it helpful to check their blood sugar when they first wake up in the morning and again before their evening meal or going to bed. Others test before or after each meal. Many people test before and after exercising.

In general, most people test at least 1 time a day if they:

People test 4 to 6 times a day when they:

When to Test

Testing at different times of the day can give you different information about how your diabetes care plan is working.

Remember: Use your test results to help make decisions about food, exercise, and medicines, and to have greater control of your diabetes.

Ask your health care team to help you find a schedule that's best for your care plan and lifestyle. To help you stick to your schedule for testing, you might find it useful to make an action plan.


Clinical review by David McCulloch, MD
Group Health
Reviewed 03/01/2014