Active thyroid hormone?

[Nanny23]

Hi I always believed T3 was the active important hormone. My doctor says it’s T4. Who is right please? I actually got him to prescribe 5 mcg. Of liothorine T3 when my numbers weren’t optimal. I feel much better but if it wasn’t for a post I found on this site it never would have happened. I live in Long Island New York. Unfortunately doctors here think the same as in UK. it’s only T-SHIRT that matters. I found an actual MD near me that takes a more functional attitude towards medicine. She must be good because to get an appointment takes a while. Can’t wait to see her

[Nanny23]

Not T shirt. Thyroid Stimulating Hormone. Correct type is dumb

[humanbean]

T3 is the active thyroid hormone. Your doctor is wrong.

To edit your own posts click on the V in a little square under your post, click on Edit, make the change then click on Post at the bottom of the page.

If you want to edit a reply, click on "More", then Edit, make your changes, then click on "Edit response".

[Hidden]

T4 is inactive t3 is active. Doctor is a bit stupid!

[silverfox7]

Some on this forum take a weeks T4 in one go so they would be in big trouble if it was the active one!

[Angel_of_the_North]

You are. Your doctor needs to go back to uni. He probably had a hangover when they did the endocrine system.