Your blood always has some glucose in it because your body needs glucose for energy to keep you going.  High sugar levels in your blood can be unhealthy for both you and your baby.  But too much glucose in the blood isn’t good for your health.  It is usually a combination of inactivity, a fat-laden diet, obesity and genetics that is responsible.  When one has pre-diabetes, the level of glucose in the blood is over the normal limit but still has not reached diabetic limits yet.  Even though other beta cells can be produced by the pancreas, the speed at which the immune system attacks and destroys is too fast for the pancreas to keep up.  Over time the amount of insulin produced in response to sugar in the blood is diminished.  Cells of our body use this glucose in the blood for growth and energy. I hope I have help you with some of these basic blood glucose meter facts.  However for glucose to get into cells, blood must have insulin contents. The best way is to do a blood test called the fasting blood glucose level test.  How can I find out what my average blood glucose is.