Emergency Physician Questions Emergency Physician

What is a dangerous level of blood sugar?

I am a 27 year old male. I want to know what is a dangerous level of blood sugar?

1 Answer

Any blood sugar over 126 fasting or 200 after a meal meets the definition of diabetes. When blood sugars get into the 300-400 range, patients can have symptoms. And blood sugars above 500 can cause life-threatening syndromes.