1-2 hours after a meal. 
Whether you are an insulin dependent or non-insulin dependent diabetic, it is important to check your blood sugar regularly and more often when you are sick, stressed, pregnant, or changing medications, as all of these cause increases in blood sugar. Again, if you are non-insulin dependent and are wondering when is the best time to take your blood glucose levels, it is 1-2 hours after a meal. Generally speaking, if your fasting blood sugar and blood sugar before meals are OK, it doesn't mean your diabetes is under control. Insulin is a hormone that is produced and stored in the beta cells of the pancreas. Insulin helps transport glucose, the body's main source of energy, from the blood to within cells. If a person makes too little insulin or is resistant to its effects, cells starve. A. Most people with diabetes need to check their blood sugar (glucose) levels regularly. The results help you and your doctor manage those levels, which helps you avoid diabetes complications. There are several ways to test your blood sugar: Hypoglycemia is the condition when your blood glucose (sugar) levels are too low. It happens to people with diabetes when they have a mismatch of medicine, food, and/or exercise. Non-diabetic hypoglycemia, a rare condition, is low blood glucose in people who do not have diabetes. Guide. A home blood glucose test measures the amount of a type of sugar, called glucose, in your blood at the time of testing. The test can be done at home or anywhere, using a small portable machine called a blood glucose meter. Home blood sugar testing can be used to monitor your blood sugar levels. When is the best time to take your blood glucose levels? This is a question that a lot of diabetics, both non-insulin dependent and insulin dependent, ponder about. In general, if you're testing your blood sugar levels every day, make sure you test at the same time.
http://www.healthguideinfo.com/living-with-diabetes/p96164/ http://www.healthguideinfo.com/living-with-diabetes/p96164/ https://labtestsonline.org/understanding/analytes/insulin/tab/test http://www.webmd.com/diabetes/guide/how-test-blood-glucose http://www.hormone.org/questions-and-answers/2013/nondiabetic-hypoglycemia http://www.webmd.com/diabetes/home-blood-glucose-test http://www.healthguideinfo.com/living-with-diabetes/p96164/
when to check blood sugar non insulin