Docs, what's a dangerously high blood sugar level?

High sugar is bad: Anytime you have high BS say 150 or greater there is damage being done to almost every cell in your body. When the level goes over 200 you see it in the urine. Over 200 things get quite worse with strokes, heart attack, kidney failure and nerve damage

A blood sugar: fasting above 100 is elevated above 126 diabetic, Above 199 non fasting is diabetic. See your doctor if you have an elevated blood sugar.