You WILL absorb on this test. You arrive fasting and they do a baseline blood glucose. Then you drink 8 ounces of a glucose solution. Glucose does not require digestion and is absorbed quickly. They then take additional blood samples over the next few hours to check how you blood sugar rises and how well it recovers. You don't eat or drink anything else during the test. You can drink water though.

This is not a test for malabsorption, but diabetes and related disorders. Being hungry all the time is a symptom of diabetes.
http://en.m.wikipedia.org/wiki/Glucose_tolerance_test

Jan

quote:

Those of us without colons are all too aware of the malabsorbtion of anything we eat or drink.

I don't think it is common for j-pouchers to have absorption/malabsorption issues, since that is primarily done in the small intestine, outside of reabsorbing water in the large intestine. Are you having specific absorption issues?

I am always hungry and consider this positive.
I limit my carbohydrate income (I actually consider that harmful and useless) and eat lots of bananas, apples, fats for my energies (high quality butter and extra-virgin olive oil) and meats/fish of every type.