That is a high TSH for somebody on your dose of T3.
NDT has been better for me than T3 alone. But 3 grains seems like a high starting dose to me. I would suggest stopping the T3 and starting on 2 grains of NDT and seeing how you get on with that.
Desiccated thyroid is measured in milligrams - not micrograms!
105 milligrams is 1.75 grains
(Some makes convert a grain as 60 milligrams; others use 65 milligrams.)
My Vade Mecum has a section on measurements.
helvella - Vade Mecum for Thyroid
The term vade mecum means:
1. A referential book such as a handbook or manual.
2. A useful object, constantly carried on one’s person.
Please don't get put off by the number of pages!
Nor by the fact it is targeted at people interested in thyroid issues. Much of its contents could be of use to many involved in health issues. Things like abbreviations, lists, general reference information.
In particular, it is not intended that you sit and read the document. Just that you download it and know you can look things up.
If there is anything you'd like me to add, let me know.
Not everything is in this one document - my major medicines document is still separate!
A TSH of 70 when medicating 60mcg T3 doesn't hold true.
If you are switching to NDT as an alternative because T3 alone is making you feel rough, then these results don't hold so much importance. However, if you switching because of that TSH, I would be inclined to retest using a different lab to reduce the risk of interference and ensure to avoid biotin for the week before.
T3 alone & NDT are different meds so equivalence can't be complete but would be roughly around 3 grains but as they work in different ways I would drop to 2 grains as an introductory dose, hold for six weeks and then retest. This will also give you opportunity to assess how you are feeling.
If you have iron or other co-factor deficiencies no thyroid hormone replacement is going to work to its best capacity.
I can't comment on UK prescription NDT sourcing as I self source from abroad but others have been helpful 😊.
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Need to try something different is T3 the answer.
New endo refuses to oversee my care because I want to continue NDT, he only supports Levo, HELP!
Switching from Levothyroxine to Liothyronine
From NDT to T3 - Difficult going. 
Results from T3
