Have you recently had your A1C level tested? If so, your doctor most likely gave you a number like 6.3%. He or she may have mentioned that your levels are ok or that you might be pre-diabetic. But, you may be wondering what does the number actually mean, and what values are bad. The hemoglobin A1C or glycated hemoglobin test measures the amount of sugar that is attached to red blood cells. This is sugar that has not been used by the body. It is normal to have a certain level