Deb, if it helps to know you are not alone, my endo also wants me to stabilize before I have either an uptake test or a scan. I have been worried about this also, since from discussions here on the BB I had the feeling that everyone else had theirs right away. In one of hte books I’m reading , the author, an M.D., state that in older people with possible heart conditions or other health problems, it is preferred to have them stabilized on ATD’s before these tests are performed. I’m only 40, and have no other health problems that I am aware of. I’m hoping that this is just a precautionary measure. Let me know what else you find out. I see my endo again (only 2nd time) on Tuesday, and plan to exhaust the discussion on this topic.