Hello,
I went through your statements. Few points for your notice:
TSH is secreted by the
pituitary gland in the brain. The secretion of TSH is adjusted according to the
thyroid hormones in the blood. T4 is different from Free T4. Most of the thyroxine (T4) in the blood is attached to a protein called
thyroxine-binding globulin. Less than 1% of the T4 is unattached. A total T4
blood test measures both bound and free thyroxine.
TSH - is the most important hormone and because of its value the thyroid function can be assessed. As per your statements the given thyroid hormone levels are normal and so for your reference normal values are given.
I think you are confused between Free T4 and Total T4
Total Thyroxin (T4) - 11.8-22.6 micrograms per deciliter (mcg/dL)
Free Thyroxin (FT4) - 0.7-2.0 ng/dL nanograms per deciliter (ng/dL)
TSH level - 0.4 to 6
You can compare yourself.
Regarding the GFR - I have a doubt about your statement results.
Normal
kidney function result – GFR above 90mL to 120 ml/min/1.73m2 and no
proteinuria.
If it is less than 90 it indicates your kidney is not functioning well. Kindly verify your GFR result.
Best wishes