The HBA1C is the general test for diabetes and is a measure of your blood sugar levels over the last 3 months or so.
If I remember correctly, below 42 is non diabetic, 42 to 47 is pre diabetic, and 48+ is diabetic. so at 49 you are just into the diabetic range, but plenty low enough that by watching what you eat you can control it yourself with out any real problem.