what does a reverse t3 mean
Reverse T3 (also called Reverse Triiodothyronine). A healthy thyroid produces the fo llowing hormones: T4, T3, T2, T1 and calcitonin. T4, a storage hormone and the most abundant, is meant to convert to T3, the most active hormone.T3 is also made directly. But thereâs another substance produced by the thyroid called RT3, which stands for Reverse T3, and it comes from the conversion of the storage hormone T4. And itâs NORMAL to have RT3.n any given day, itâs stated that 40% of T4 goes to T3 and 20% of T4 goes to Reverse T3. But in any situation where your body needs to conserve energy and focus on something else, it will change the above percentages, changing the conversion of RT3 to 50% or more, and the T3 goes down, down.