Thyroxine (T4) is the principal hormone secreted by the thyroid gland. All the T4 in the circulation is derived from thyroidal secretion. In contrast, only about 20% of circulating ...
Maternal free thyroxine (T4) and total T4 were not associated with internalizing or externalizing scores of children. The linear relationship with more externalizing scores was across the range of ...
Traditionally, the free thyroxine index, sometimes called a "T7 ... include an indication of which hormone is used, i.e. THBR (T4) or THBR (T3). A T4 signal is preferred over T3 for THBR ...
One test measures the three main thyroid hormones: thyroid-stimulating hormone (TSH), triiodothyronine (T3), and thyroxine (T4). The other test measures antibodies as well as hormone levels.
Peds: Monitor TSH and total or free-T4 at 2 and 4 weeks after initiation, 2 weeks after dose change then every 3–12 months thereafter. Correct adrenal insufficiency before initiation.