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High blood sugar, or hyperglycemia, is identified by blood glucose levels that are greater than 200 milligrams per deciliter, according to Mayo Clinic. Common signs of high blood sugar include increased urination, blurred vision, increased thirst, fatigue and headache. ...


According to WebMD, a normal fasting blood sugar level is any level below 100 milligrams per deciliter; however, the range of normal levels may be different for different people. Some people have normal blood sugar levels around 60 milligrams per deciliter.


Testing blood sugar levels helps manage diabetes by giving the health care provider an idea about how a person's specific diabetes care plan is working, states the American Diabetes Association. Knowing how the body is handling treatment helps the doctor adjust the trea...


A normal blood sugar level is less than 100 milligrams per deciliter when fasting and 140 milligrams per deciliter two hours after eating a meal. A milligram per deciliter is a unit of measure that shows the concentration of a substance in a specific amount of fluid.


A good, fasting blood glucose level is 100 milligrams per deciliter, according to WebMD. Two hours after eating, the blood sugar level should be less than 140 milligrams per deciliter for people age 50 and under. For ages 50 to 60, it should be less that 150 milligrams ...


A normal blood sugar range is less than 100 milligrams per deciliter following an overnight fast and less than 140 two hours after eating. Throughout the day, sugar levels vary from 70 to 80, although levels within 10 milligrams per deciliter on either side are also no...


A high blood sugar number is anything above 100 milligrams per deciliter of blood if a person has not eaten for eight hours, according to WebMD. A number of 126 milligrams or higher per deciliter of blood during fasting means that a person has diabetes.