Levothyroxine (L-T4) and not dessiccated thyroid, is the preferred long-term replacement medication for hypothyroidism. A serum TSH result between 0.5 and 2.0 mIU/L is generally considered the ...

[204] In cases where TSH appears inappropriately elevated, a thyroid hormone suppression test (1mg L-T4 or 200µg L-T3, po) would be expected to suppress serum TSH more than 90% by 48 hours in ...