Percent of range

[Dryski]

Since your group likes to go by percent of range could you tell me an example of what makes a good balance on free t4, free t3 and tsh. Should they all fall around 50 percent of the range being used for your particular lab?

[TiggerMe]

We tend to use percentages as it makes results from different lab ranges easier to compare

TSH would be 5-20%

fT3 65-85%

fT4 70-90%

So maybe somewhere in these ranges for many, though as with everything some like them a little higher and others a little lower as sweet spots are completely individual

[Dryski in reply to TiggerMe]

Thankyou so much. I currently don't know my ft3 and my ft4 is only 35 percent. I feel quite bad and fighting for a dose increase.

[TiggerMe in reply to Dryski]

If your GP is no good perhaps time for a change or ask for a referral to Endo?

35% fT4 s not going to make anyone feel well 😟

[Hollins]

Hi. This leads inevitably to the question of how does the lab arrive at a 'normal' level and how is the range determined?

Best wishes