
Everything You Need to Know About Thyroid Hormones (T4 & T3) Written by: Nattha Wannissorn, PhD (Molecular Genetics) Updated: Nov 24, 2018 What is T3 and T4? The thyroid gland is located in the base of the neck in a typical body and is involved in secreting important hormones T4 (thyroxine) and T3 (triiodothyronine). T3 contains […]