Hi, I am not sure I remember but I would suggest visiting
http://www.stopthethyroidmadness.com...l-thyroid-101/
This page is the best thyroid page on the net and they also have a forum you can visit and ask questions. The page is huge, many tabs to look up different things. They specifically adress your questions but I can't remember enough to answer you.
They also have a list of doctors world wide to help find one willing to use NDT along with cytomel.
They have been so nice and helpful to me, I read their forum daily.