The "functional" reference range for Free T3 is 300 - 400
The "functional" reference range for Free T4 is 1.0 - 1.5
The "functional" reference range for Reverse T3 is 25-30
The "functional" reference range for T3 Uptake is 28-38
The "functional" reference range for total triiodothyronine (TT3) is 100-180
The "functional" reference range for total thyroxine (TT4) is 6-12
The "functional" reference range for Free Thyroxine Index is 1.2 - 4.9
The "functional" reference range for TSH is 1.8 - 3.0
Thank you very kindly!
Can you give us the reference ranges for the Free T3 and Free T4? Reference ranges vary from lab to lab, so must come from your own report. We will need to see where your levels fall within those ranges, but if they are anything like mine, I'm going to guess that both FT3 and FT4 are below range.
I'm also going to guess that your doctor is increasing and decreasing your medication based on TSH, rather than the actual thyroid hormones, FT3 and FT4...
Please provide the reference ranges, so members can comment more fully.