Basically it is saying for each day over the past 2-3 months your
glucose averaged 111 mg/dl. The lab has high
range of 6.07% which equates to 128 mg/dl, diabetes. Why so high? Only the lab can answer this.
To answer your second question, yes you need to be concerned. Unless you're willing to make lifestyle changes diabetes awaits you around the corner and that corner is very close. I have written about lifestyle changes - food choices, exercise, weight, lipid panel - in numerous posts.