Did the doc mention the thyroid drug and level you will take? I am assuming
Synthroid or Levo, since those seem to be the drugs of choice for most endos. Sometimes, you get the exact dosage you need. Sometimes, you don't. If, after a few weeks, you are too tired or too wired, then go to your endo and demand bloodwork. Many endos don't treat FT3 levels. They believe FT4 will convert to FT3 naturally by the body.