Were you low carb prior to the tolerance test? If you were, you can get a false positive result since your body is not used to carbs. Normally the doctor will tell you to go back to eating carbs for a few days prior to the test.
I wouldn't recommend trying to argue with your doctor. Just say that you have carefully considered the recommendation to take statins and are declining.
Don't forget to buy his supplements to get the nutrients that aren't in the food he tells you is the healthiest for you:
https://www.drfuhrman.com/shop/247/essentials