Thyroid function test

 

  • Triiodothyronine (T₃): 80 to 230 ng/dL
  • Thyroxine (T₄): 5 to 12 mcg/dL
  • Thyroxine, free (FT₄): 0.8 to 2.4 ng/dL
  • Thyroid-stimulating hormone (thyrotropin): 0.2 to 5.4 microunits/mL