Thyroxine/Triiodothyronine uptake index:MRto:Pt:Ser/Plas:Qn
thyroxine/triiodothyronine uptake index:mrto:pt:ser/plas:qn
Thyroxine/Triiodothyronine uptake index:Mass Ratio:To identify measures at a point in time:Serum/Plasma:Quantitative
thyroxine/triiodothyronine uptake index:mass ratio:to identify measures at a point in time:serum/plasma:quantitative