Diabetic hog in denial. Blood sugar varies based on what/when you last ate, if and how long ago you exercised (or experiences stress), and quite a few other things. If you want to, you can make some adjustments a few days before the test to fudge numbers.  Just verified the A1c, and it gives an average of blood sugar for the last 2-3 months. https://diatribe.org/whats-normal-a1c-when-it-misleading Still suspect a hog in denial.