Tania Smith has written a nice blog clearing up the difference between a T4/T3 ratio in dosage and the resulting T4/T3 ratio in blood. The two cannot be solidly put together because of the difference in T4-T3 conversion in the blood which alters the ratio taken orally in a way individual to each patient. That is, you can't predict what will happen in blood from dosage alone.
An example of confusion about Free T3: Free T4 ratios
BY THYROIDPATIENTSCA on AUGUST 2, 2021 • ( 0 )
I’ve had a quick scan through and there’s lots of great information. I love Tania’s blog posts. Looking forward to having a thorough read through it later.
Considering how many very positive comments about Tania's articles we see here, why are there so few "Likes" on them?
I know you need to register in order to do so, but I'd have expected more of them.
Seems only fair to let her know how much we appreciate them.
This confuses me too .. as i look at the latest blog post .. at the bottom of the page it appears to have only 2 ' likes' . Can it really be the case that there are only 2 people on the planet who regularly like anything Tania writes ?
I see johannes dietrich has liked one in september last year..
I've been assuming (hoping !) that there more likes that for some reason aren't shown on my page ?
I don't think there are hidden Likes.
I acknowledge and support Tania's articles by direct mailing
It wasn't meant to be a criticism of you - or anyone else - as an individual. Just a hopeful whipping up of members to consider clicking what they like. 
Even if Tania is snowed under by supportive emails, it always looks good when blogs receive some on-blog likes.
I would 'like' Tanya's articles if it didn't require me to set up a Wordpress account😖
nellie237, & helvella
Exactly.
304,668 hits & only 2 'likes', and I'm another who doesn't want a Wordpress account either as am not a blogger, although I really enjoy Tania's articles.
From that point of view, I agree. 'Tis true I already had a Wordpress ID... but that was set up to comment on another blog!
I can't find the link above, but here it is
thyroidpatients.ca/2021/08/...
thank you
I didn't get the link either, so thanks for re posting it.
oh, dear, can't really follow any of it
Hi Mountainice, I don't know if this will help but the way I think about this ratio is: How many molecules (or units) of Free T4 do you need to generate 1 molecule (or unit) of Free T3. The answer to this has been measured approximately in the past to be 4:1, i.e. you need 4 units of FT4 to make 1 unit of FT3. To be awkward, some turn this ratio upside down so that instead of 4/1 they use 1/4 and hence they quote .25 rather than 4. (The question they are asking is: if I have 1 unit of FT4 how much FT3 will I get? ... not much!). I prefer the 4:1 way of thinking, it seems to be clearer.To make a sweeping generalization the rest of the article goes on to discuss who did they measure to get that ratio? As with all of life there is always a distribution of results, e.g. some people walk slowly and some people walk quickly, but on the average people will walk at (let's say) 1 mile an hour. Now, what the article is saying is that if you have a problem with your leg should your therapy goal for getting around be forced to be 1 mile an hour (the population average), shouldn't you aim at maybe settling for 1/2 mile per hour because you should really be compared with people who cannot walk very well?
At least that is how would I summarize the article.
How excellent, thank you for your summary.
Feeling lost! T4-T3 ratio > blood tests results > please advise! 
Difference between Free T3 and T3?
Is T3/T4 ratio significant?
Clinical trial - using body weight to adjust t4 versus t4 + t3 dose
