What is the difference between T3 and T4 thyroxine?
Thyroxine (T4) and triiodothyronine (T3). They are often collectively referred to as thyroid hormone because T4 is largely inactive, meaning it doesn't impact your cells, whereas T3 is active
Thyroid Profile Total, Thyroid Stimulating Hormone Total T3 Total T4, Serum Thyroid Profile