Hi Carrie.
In my own personal experience, my insulin is high but my blood sugars are normal. My a1c and my GTT all came back normal levels of glucose. The higher level of insulin for me is from my insulin resistance. My insulin leve is always high though...irregardless of the amount of glucose in my system or the food that I am processing.
Whether or not, that peak of insulin on your test is in indicative of insulin resistance I am not sure...it could just be a normal reaction of your body to trying to control the glucola. So...wait for your dr to explain it because labs have different levels that they consider normal etc. Your dr will be able to tell you the actual results. If you have your results though...you may be able to call the nurse and ask about it even though your appt is next week. Otherwise, put it away and pretend you didn't see it.