t tell a doctor what is going with your glucose levels at all times of the day. Home
glucose meters are good to see how well one is managing their
glucose levels. Having scaled results (high to low, or normal to near high or above) calls for an A1c test to see the entire picture.
An A1c test measures your glucose going back three months. Why three months? On the average, new red blood cells live three months before dieing off and getting turned into Bilirubin.