Yep, what MommyAmanda said. I'm not sure if your nurse practitioner is trying to get a guage as to if you're really a Type 2 diabetic but the Hemoglobin A1C is definitely NOT a good substitute for taking the GTT. If you don't want to take the GTT, what is a good substitute (again, if you're concerned you might have high blood sugar) is to test your own blood sugar and regular times throughout the day for a few days. As in, upon waking (before eating), immediatley before breakfast, 1 hr after breakfast, 2 hrs after breakfast, and last thing at night. This is probably a far better measure of actual problems regulating blood sugar than the GTT anyway. Those little test kits are available at any drugstore or your healthcare provider's office may be able to get one for you.