| It takes a while for the food you eat to digest and so the glucose from the carbs you eat enter your blood stream at different rates depending on how long they take to digest. If you eat very slow carbs like pasta, or carbs mixed with a lot of fat like pizza they may take anywhere from 3 to 5 hours to show up. If you still have a robust second phase insulin response, you may never see them, because they get mopped up. Others do.
That said, both readings were within the margin of error for most meters, so they probably are the same.
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A1c 5.7% 10 years after diagnosis.
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