I have been on NDT since Feb started slowly up to 1 grain 21 April. TSH 4.69 before starting then TSH 0.67. Was told by endocrinologist to increase to 1 1/4 grain. My problem is I have lost over 1 1/2 stone since starting NDT and have bad heartburn. I had endoscopy yesterday all normal. My appetite has diminished. Any advice welcome. I intend getting tested today FT3, FT4 and TSH but have not taken NDT for 2 days now. Will results still be usable. Intend to then see endocrinologist again at weekend with results.