All of the following statements regarding T3 (Tri-iodothyronine) are true Except
OUnbound free T4 and T3 (0.03 and 0.3 percent of the total circulating hormones, respectively). OT3 is the more impoant physiological hormone and is also produced in the periphery by conversion from T4. OT3 is quick acting (within a few hours), And T4 acts more slowly (4-14 days). OT3 is given three times daily, usually as a suppressive dose of 20 mg three times a day.O T4 is given once daily
Half-life of T3 is only few hours
Only 20% of the total T3 is produced by the thyroid
T3 is usually given as 100 mg once daily
T3 is the active form of the hormone and is produced in the periphery by conversion from T4
Endocrinology and breast