What is a normal blood sugar count?

Normal fasting blood sugar counts -where no meals were consumed in the eight hours prior- in healthy persons range from 70 to 99 mg/dL. Levels in the two hours after eating should be less than 140 mg/dL, cites the Virginia Mason Medical Center.

Diabetes is diagnosed when a patient has two or more consecutive fasting blood glucose tests equaling 126 mg/dL or higher or a single test result of 200 mg/dL within two hours of a meal. Some diabetics may experience excessive urination or thirst, fatigue and unexpected weight loss, while others never exhibit any symptoms prior to diagnosis, according to the Virginia Mason.