In short, cells are not able to use sugar when someone has pre-diabetes or diabetes. It is important to track blood sugar levels for a variety of reasons. Keep in mind that it is always important to talk to a physician prior to using these charts. Each chart varies in its structure and specificity however, many of them include ideal blood glucose ranges and tips for lowering blood sugar. insulin, food, drink, etc.) for that meal, as well.
To chart blood sugar levels, enter data from a glucose meter before and after meals.