I think you're right.

I'm stuck, though, trying to choose between these four options:

1) Synthyroid (T4 only);

2) Armour/Erfa (T4 & T3 @ 80%:20%);

3) a compound (e.g., 95% T4 & 5% T3); or,

4) Cytomel (T3 only).

I'm leaning towards the compound that mirrors natural thyroid hormone production (95% T4:5% T3), but don't know if my T4-T3 conversion is poor, or if my
bloodwork indicates a better way to start.

My other concern is that heavy metals or something else (e.g., liver, where 60% of T3/T4 is converted?) could interfere with any new protocol, slowing/preventing progress.

Meanwhile I'm getting baselines on my core temp, pulse rate, and blood pressure before I start any protocol.

Any thoughts? You had said you first started on Synthyroid? Would you have done so back then if you knew everything you know today?