A collection of research graphs and quotations showing diverse Reverse T3 levels coexisting with health, in various illnesses, and alongside various T3 and T4 levels.
RT3 – Reverse T3
Think twice about cancelling patient-pay Reverse T3 tests
At the end of January 2020, Alberta Precision Laboratories established a new policy of cancelling patient-pay Reverse T3 (RT3) tests on standard laboratory test orders. One memo in circulation explains the justifications based on RT3 silence in the 2012 and… Read More ›
RT3 inhibits T4-T3 conversion. How worried should we be?
[Post updated May 2, 2021] Many thyroid patients have acquired concerns about Reverse T3 (RT3) by reading Kent Holtorf’s web pages. Likely even more have learned by reading Reverse T3 information on the Stop the Thyroid Madness (STTM) thyroid patients’… Read More ›
Deiodinase Type 3, not RT3, plays the T3-blocking role
A lot of internet myths and misinformation surrounds Reverse T3 (RT3). Well-meaning people have attributed to the hormone a “T3-blocking” function. However, the enzyme deiodinase type 3 (D3) (NOT Vitamin D3, which is very different) is the main blocker of… Read More ›
Visualizing thyroid hormone activity in cells: T3 and RT3 in context
I’ve recently been inspired by an visual of thyroid hormone cellular action published by Bianco and colleagues in September, 2019. This visual has taught me a new way of seeing these hormones’ pathways of movement and activity in our bodies…. Read More ›
The basics of thyroid hormone action, transport and conversion
This comprehensive educational post collects the basics of thyroid hormone, transport and conversion. T3 action on nuclear receptors Every organ and tissue in your body must maintain a healthy level of T3 hormone activity to function properly. Bloodstream T3 supply… Read More ›
The impact of thyroid hormone dysfunction on ischemic heart disease, and how T3 therapy may help
Finally! In the past, the overemphasis on hyperthyroidism and thyrotoxicosis and heart diseases has made many doctors think that only excess T3 and T4 is bad for the heart. We finally have an article that focuses on the real cause-effect… Read More ›
Do you have a Reverse T3 problem?
Across Canada, Reverse T3 testing is often offered for a fee — patients usually pay for it. It has been this way for more than a few years now. As patients (and doctors), we need to know when we can… Read More ›