in addition to the laboratory finding of elevated serum thyroxine levels , many of these syndromes are also accompanied by abnormalities in triiodothyronine and free thyroid hormone levels , as well as unresponsiveness of thyroid-stimulating hormone to thyrotropin-releasing hormone , all of which further erroneously indicate a diagnosis of thyrotoxicosis .
C0041014
triiodothyronine
C0040156
thyrotoxicosis