I recently asked my GP to check my thyroid and all he checked was TSH. It came back at 4.8 with 5.0 being the high end of normal. He insist that my thyroid is working ok but I know better from reading this forum and how I feel.
Anyway I am going to get my own lab work done and if it is out of range I am going to go to another doctor,but I need to know which thyroid test is sufficient to determine hypothyroidism.
The test I am looking at measures
Serum;Free Thyroxine Index (FTI);Thyroxine (T4); Thyroid Hormone Binding Ratio (T3 Uptake); Thyroid-Stimulating Hormone (TSH)
Is that good enough or do I also need the free T3,T4?
Thanks