HbA1C does not need fasting I believe.

It is a 4 month marker test to see how much sugar has been
incorporated into your red blood cells. It shows mostly the last 4 weeks, with the earlier times averaged in. So it is not affected by food.

This chart gives the values --the green is considered "normal".

Some doctors like mine begin diabetes diagnosis before 7.0 however. It varies depending on how they are trained.
http://www.diabeteschart.org/bloodsugarchart.html

Also the last line in green is more common in older patients.
With younger ones typically testing in the first line. Age is considered in some testing, but doesn't show on this particular chart.

And yes, my gum was really inflamed. The edge of the crown was pinching it everytime I chewed something. I think it was also infected because I had a sore throat too. But now it is all back down and like nothing happened! I have 7 crowns, and never had a problem before. I had it placed in 1993!