Hi I received free T3 serum results today I'm hypothyroid on 75mcg thyroxine struggling to increase at present due to anxiety and palpitations
Results 4.1 normal range 3.1 to 6.8
Tsh 6
Free t4 15.8
Does the T3 look ok in that range, I know it's normal but is it in good range?
Any advice please
Thank you as always😄
Well, it's a bit low. I would want mine much higher than that. It's not even mid-range.
Does this indicate that T3 would be helpful? Thank you
You can't really gauge the conversion unless you do the fT4 and FT3 at the same time. Yours were done separately, but don't really indicate an conversion problem.
What all of them indicate is that you're under-medicate. Your TSH is much too high, it should be under one. So, before you got wondering about T3, you should get an increase in your T4 dose, and retest in six weeks time.
If both FT4 and FT3 are low in range then an increase of Levo is the way to go, as increasing your FT4 will also increase your FT3 if your conversion is good enough. So we need to know the range for FT4.
On the face of it there doesn't seem to be anything wrong with your conversion. Good conversion takes place when FT4: FT3 ratio is 4:1 or less. Your ratio is 15.8 : 4.1 so 3.85 : 1 so that doesn't point to needing T3.
Get your other vits looked at such as Vit B12, Vit D, Folate and iron (ferritin).
Low iron (aneamia) for exmple, always causes palpitations and many of these deficiencies can cause depression/anxiety.
Yes, you are definitely under medicated at the moment and need an increase in thyroxine.
T3 and TG results 
Lab results
Test results on thyroxine only - any comments?
I finally got my dr to do a free T3 test. what do these results mean
