What is a normal blood glucose level?

Normal or usual plasma blood glucose (sugar) levels range depending on the time of day, meals, and other factors. Using a chart like the one below can help you and your healthcare provider develop a program of regular blood glucose monitoring for diabetes management.
These are considered normal blood glucose ranges for people without diabetes and with diabetes:
Time of Check Goal ranges for people without diabetes. Goal ranges for people with diabetes
  • Before breakfast (fasting) <100 mg/dL 70-130mg/dL
  • Before lunch, supper and snack <110 mg/dL 70-130 mg/dL
  • Two hours after meals <140 mg/dL <180 mg/dL
  • Bedtime <120 mg/dL 90-150 mg/dL
A1C (also known as glycosylated hemoglobin A1c, HbA1c, or glycohemoglobin A1c) <6% <7%
Source: http://www.joslin.org/info/Goals-for-Blood-Glucose-Control.html

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What is hyperglycemia?

One has hyperglycemia, or high blood sugar, when they have excess glucose in the blood – a blood glucose level above 130 milligrams per deciliter (mg/dL) – and haven’t eaten for 8 hours.

What is a normal fasting blood glucose for a person with diabetes?

According to the American Diabetes Association (ADA) guidelines, patients with diabetes should strive to achieve fasting blood glucose levels below 131 mg/dL, and levels following meals below 180 mg/dL.
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