TRH is secreted from _____ and acts on _____

• hypothalamus and anterior pituitary gland

• hypothalamus and posterior pituitary gland

• anterior pituitary and hypothalamus

• posterior pituitary and hypothalamus

changes in binding proteins levels will in turn affect the levels of _____

• total T3 and T4

• free T3 and T4

peripheral conversion in thyroid hormone is

• synthesis of triiododthyronine from thyroxine

• synthesis of thyroxine from triiodothyronine

• synthesis of T4 from T3

• activation of TSH

Aarav, a patient undergoing thyroid function tests, is concerned about his results. His doctor explains that heterophilic antibodies or anti T antibodies may cause

• spurious elevation of TSH

• spurious elevation of fT3, fT4

• spurious elevation of TT3 , TT4

• spurious elevation of thyroid hormones

which is 99% protein bound

• T3

• T4

• TSH