Should I add more T3 after blood results?

[Theminx]

Hi, I don’t think GP gets the fact that taking T3 lowers T4 levels. However after latest blood results he has told me to increase T4:

TSH 0.03 (0.37-4.2)

T4 10 (12-22)

T3 4.2 (3.10-6.8)

I have been taking 75mcg T4 and 20mcg T3 .

GP is concerned that T4 is below range and told me to take 100 mcg to try and raise it.

From previous post some time ago I have used the calculator:

FT4 -20%

FT3 29.73%

Should I take more T3 to get it in the upper range? And if so how much?

Thank you in advance for any help or suggestions.

[SeasideSusie Remembering]

Theminx

Something is wrong with the calculation. If your FT4 is 10 with a range of 12-22, it can't possibly be 20% through the range, it is below range so it will be in minus figures, it would be less than 0%.

Only you will know what balance of T4/T3 will suit you, it's a lot of trial and error. I take a combination of Levo and T3 (nothing to do with GP though), and I found, after many months of tweaking, that I am best when both my FT4 and FT3 are around 75% through range. When I lowered my Levo to a point where my FT4 was 12.8 (12-22) I couldn't function, and it took me quite a long time to increase back to where I felt reasonably well.

PS - I have deleted your duplicate post.

[Theminx in reply to SeasideSusie]

Hi SeasideSusie thank you for your reply.

The calculation is minus 20%, sorry it’s not clear in my post.

How did you get your FT4 up with taking T3?

Thank you for deleting the duplicate post.

[SeasideSusie Remembering in reply to Theminx]

Theminx

How did you get your FT4 up with taking T3?

I had been tweaking Levo and T3 doses for months until 100 Levo/25 T3 seemed about right, but my FT4 was 19.5 (12-22) and I thought maybe too high so I reduced my Levo from 100mcg to 75mcg which resulted in those devastating effects. I increased back to 100mcg, keeping my T3 the same dose. It has taken a year but now I seem to need 112.5 Levo with 25 T3 and I feel my thyroid is stable on those doses, last test FT4 was 72% through range and FT3 76%. But those figures wouldn't suit everyone, it is all so individual.

[Theminx]

Thank you. Will try 100mcg Levo with a little more T3 and see how it goes