If a person is well within the normal lab ranges for the TSI test does that mean they do not have graves then? I had read several different things on it now. 1. That a normal person without Graves would be below the normal range for the test. 2. That a person with Graves would test above the normal range for this test and 3. That a person with Graves could test within the range for this test. I am now wondering which is correct.