Only a "do not eat anything after midnight is what a lab would require." In fact some people think if I just don't eat anything sweet for a week or two before I have a blood test then my sugar will show up lower in my lab reports, wrong. Lab reports check a three month average and sugar in the urine to determine if you are on your no-sugar diet or if you are eating the right foods. As for fasting before taking insulin, your insulin is what controls your sugar level, so a stick check will tell you if you need to give more insulin or less based on your sugar level at that time. If you are considering speaking to your Dr about insulin ask about the Nova-log Insulin Pen, a lot less painful then syringes and is as easy as turning a dial to the amount you need and pushing a button to inject. It looks like a pen in your pocket and you don't have to worry what other will think if they see you with syringes. I am a insulin diabetic, the doctor can also set you up with diabetes education. Yes, for a fasting blood sugar test, you need to fast. It's not hard, just eat an early dinner and skip breakfast, people do that all the time. It's worth it.

I test my blood sugar level every morning when I wake up to get my fasting level (Type I diabetic). That's to know your baseline. After a 24 hour fast, of course your glucose would be much lower, so an overnight fast is usually enough. Yes, if a Fasting Blood Sugar test is being done. The reason for fasting is because you get the best result for the test.

Just don't eat anything after midnight or the morning of the test.

After the test, eat away!