Fasting glucose 85. then GTT hour 1glucose 84, hour 2 glucose 94. what would cause this odd response?

Normal variability. So for that test, you basically get a dose of glucose to see if your blood sugar remains elevated. Our bodies respond very quickly to glucose, meaning that it gets taken up by our muscles and liver almost immediately after it enters the blood stream. Our body's "thermostat" is set to keep the blood sugar level between 70-99. Over 100 indicates a problem with glucose metabolism. Yours is normal.
Need more info. All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. Having said that, With fasting glucose of 85, why did you have GGT? How was the glucose administered? What was the Glucose level at 3 hours?
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