[Value of FT1  (free thyroxine index) as an indicator thyroid functions in TRITAB and TETRATAB tests].
D006801:Humans; D011933:Reagent Kits, Diagnostic; D013960:Thyroid Function Tests / Q000379:methods*; D013974:Thyroxine / Q000097:blood*
D011933:Reagent Kits, Diagnostic; D013974:Thyroxine