When I wrote 'two hours after eating', this means two hours after starting a meal according to medical professionals who advise patients, but to be honest, I think that's nitpicking when you're talking about
breakfast. How long does it take to eat a bowl of oatmeal? Maybe 15 minutes? Maybe less? So, if you're testing exactly two hours after you started or two hours and 15 minutes after you started, whatever blood sugar reading you see is going to be similar.
As soon as we put food in our mouths, we start metabolizing it with the enzymes in our mouths as we chew. So, I guess doctors want to be "exact" in timing and choose to say "when we start eating".
Consider a large meal like Thanksgiving which seems to go on and on. It's a long meal with lots of food. You can see the reasoning, then, why doctors tell us to count the time from the start of a meal. By the time you get up from that table, it might be an hour, an hour of eating and talking which makes the meal longer and second helpings!
A non-diabetic metabolizes food easily because his pancreas is working normally and his blood sugar doesn't rise a lot. A diabetic or a pre-diabetic will have higher blood sugar as the pancreas tries to produce enough insulin to take care of the meal and even higher blood sugar if the person is insulin-resistant. So, in my opinion at least in my case, it doesn't matter if I start testing two hours from when I started eating or two hours from when I finished - because my blood sugar is going to be high if I eat carbs or elevated even if I don't.
Yes, Lloyd is really talking about fasting. Doctors follow the guidelines of the ADA when diagnosing diabetes so they are looking for under 100 for fasting. Between 100 and 126 is considered pre-diabetic and over 126 is diabetic according to their charts.
Bob, please don't get stressed over this. If you're eating well and not going overboard with carbs, I'm sure you're doing ok.