Thyroid hormone metabolism

Thyroid hormone metabolism and its potential modulation by drugs and environmental toxins. BPA indicates bisphenol A; KClO4, potassium perchlorate; L-T4, levothyroxine; PCB, polychlorinated biphenyl; TBG, thyroxine-binding globulin; T4, thyroxine; TKI, tyrosine kinase inhibitor; T3, triiodothyronine.