Intermittent or non-compliance with levothyroxine (L-T4) replacement therapy will result in discordant serum TSH and FT4 values (high TSH/high FT4) because of a persistently unstable thyroid state ...
[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 ...
Pregnant women whose serum TSH levels are elevated give cause for concern, as such increases indicate primary maternal thyroid insufficiency. If iodine intake is adequate, the most likely causes ...
The total triiodothyronine (T3) test is one of several tests used to diagnose thyroid disorders. T3 is an active thyroid hormone that your body creates by converting thyroxine (T4) into ...