Enfrance, the protocol for reducing rT3 is to stop taking thyroxine and use T3 only for about 3 months to clear unconverted T4.
Mercury level is high. I don't know how you reduce it but having any amalgam fillings checked and investigating whether there are high levels of mercury in fish would be a good place to start.
Some rT3, yes, but you're is well over-range. It will make you feel bad.
If I were you, when the T3 arrives, I would stop the NDT immediately. I did warn you that it might not suit. To clear out the rT3 you need to stop all forms of T4, because it will just continue to convert to rT3. You must go onto T3 only.
Do you eat a lot of tuna? That's the worst one for mercury. As Clutter said, check out your dental fillings. If you stop the in-put of mercury, the body will detox itself.
Enfrance, T4 converts to T3 and rT3. rT3 is inactive and is a natural brake on converting too much T4 to T3.
Your rT3 is over range which may prevent T3 entering receptor cells. You can reduce the amount of thyroxine you are taking by reducing NT and adding T3. The T3 will boost low FT3 and stimulate better conversion of T4 to T3.
If that doesn't work you'll need to stop NT and take T3 only for 3 or 4 months to reduce rT3. Once it's in range you can reintroduce NT.
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