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. Ideally, patients with diabetes can bring their blood glucose levels as close to normal as possible with lifestyle changes and medication. ADA guidelines recommend HbA1C levels below 7%, or an average blood glucose level below 154 mg/dL.
http://www.mayoclinic.org, https://www.health.harvard.edu

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What is low blood glucose?

Low blood glucose, known as low blood sugar or hypoglycemia, is when your blood glucose levels fall below 70 mg/dL. Symptoms can set in quickly and include dizziness, anxiety, cold sweats and more.
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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.
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