If a person has problems converting T4 to T3, could it be possible they also have problems converting to T2 & T1?

[charliecooper]

Could that be why Nutri Thyroid / Adrenal is the only supplement that will work for some people?

[helvella Administrator Thyroid UK]

If that were the case, then I would have expected T3 levels to be high-ish as it is not being converted into T2/T1. Whereas we so often see low-ish T3 levels regarded as indicators of poor T4 -> T3 conversion.

Mind, the whole issue is riddled with uncertainties and poor analysis. (I have probably just contributed to that! )

Rod