First of all, if you're stoned, don't eat unless your blood sugar level is down.

Second, the "normal" levels are from 80mg/dl to 120 mg/dl.

Third, here are some website that might help you:

www.diabetesselfmanagement.com
www.diabetes.org
www.idf.org
www.diabeteshealthonline.com
www.ndep.nih.gov

Hope this helps!

Peace,
Nurse