rT3 with Thybon?: I have been taking only Thybon... - Thyroid UK

Thyroid UK

139,414 members163,651 posts

rT3 with Thybon?

milupa profile image
5 Replies

I have been taking only Thybon for so long I cannot remember if it makes sense to measure rT3?

I saw a new practitioner today and he was clearly unhappy when I said that I don’t need T4, fT4 and rT3 measured because I am on Liothyronine.

Please bring me up to date on this topic, thank you!

Written by
milupa profile image
milupa
To view profiles and participate in discussions please or .
Read more about...
5 Replies
greygoose profile image
greygoose

If you are not taking any T4, and your thyroid isn't producing any, then you won't have any rT3 because rT3 is a product of conversion from T4: no T4 = no rT3. Goodness! Even an endo should know that! :)

milupa profile image
milupa in reply to greygoose

How kind of you to reply! And thank you for clarifying this.

I had the same issue when my husband went to a private GP last year: she was so annoyed she stopped seeing him ‘because I thought I knew more than she’.

This practitioner today also took it personally that I disagreed with him.

Happy Women’s Day tomorrow (how lucky we are to get one out of 366 😉).

greygoose profile image
greygoose in reply to milupa

Not that that one day changes anything!

Well, at least I've never had that problem with a doctor. Usually they say 'oh, well, you know more about this than I do'. Which is pretty decent of them, I have to admit. Trouble is, it doesn't get me anywhere. That's why I self-treat.

DippyDame profile image
DippyDame

No real need to test rT3 at all...it is the inactive form of T3

If T4 gets too high it starts converting to rT3 instead of T3, this helps keep T3 from getting too high. The rT3 will be metabolised and excreted.

No need to worry about it.... since you are taking T3 only, rT3 will not be an issue in any case

Your GP should understand that T3 reduces both TSH and FT4 so tests are unreliable markers. The practitioner did not!

On T3-only we monitor the dose by signs and symptoms.....good old fashioned clinical evaluation.

We clearly have to understand and know what these signs are

I need high dose T3-only to function (self medicating) and my practice now accept that testing is not necessary. Truth be told I don't think they have a clue about T3.

You need to educate your GP.

This might help

paulrobinsonthyroid.com/can...

milupa profile image
milupa in reply to DippyDame

Thank you so much for the link! Paul Robinson’s book was such a game changer for me ten years ago, but I had forgotten about him.

I felt unwell after a tooth extraction so my dentist sent me to this alternative practitioner. I was not prepared for blood tests but now I have my arguments ready for the next appointment.

Not what you're looking for?

You may also like...

Rt3 - ft4 0 and rt3 still high!?

to have high rt3 while ft4 is zero !? Usually people clear rt3 in 3-4months using t3 only to...

Does rT3 always have to be bottom-range in order not to have an rT3 problem?

hypo. Did I have a rT3 problem back then? My rT3/FT3 ratio was over 20, like 26.

Rt3 experiences, studies, stories

have had high rt3 and was good ONLY CLEARING IT WITH T3, many of these report the needed to lower...

rT3 dominance...real or not...?

as you need to clear your system of excess rT3. This is said to take 3-6 months. But is rT3...

High rt3 and adding t4

had high rt3 levels wouldnt you make problems worse by taking more t4. You would create more rt3...