To Melanee Ellis: You say the glucose is normal, what are the values? Are you have blood drawn after a 4 or 5 hr fast, or soon after he has eaten? You may want to try a glucose/insulin ratio - this is a test that will most likely have to be sent out to a private lab and is more accurate in diagnosing insulinoma for those ferrets who have symptoms but a seemingly normal glucose. Fasting prior to blood drawing is required for this test to give the most accurate info. I'm not saying it is insulinoma, but this test has helped sometimes when other tests haven't. Debbie Riccio [Posted in FML issue 1464]