Pick out a piece of scrap wood. Because of a shim's size and function, the type of wood you choose isn't very important. Even out the edges of your scrap piece of wood by cutting around it with your jigsaw. A shim can be as wide or long as needed.
Monitoring measures your blood glucose at a moment in time, whereas eAG/A1C represent an average of your glucose levels 24 hours a day, including times when people are less likely to check their blood glucose (for example, post-meal periods of higher blood glucose).
Another frequently cited study showed that an A1c of 7% could reflect an average blood glucose value anywhere from 123 mg/dl to 185 mg/dl; an A1c of 9% ranges from 170 to 249 mg/dl, and an A1c of 11% ranges from 217 vs. 314 mg/dl.