Thyroxine.free^6th specimen post XXX challenge:SCnc:Pt:Ser/Plas:Qn
thyroxine.free^6th specimen post xxx challenge:scnc:pt:ser/plas:qn
Thyroxine (T4) free [Moles/volume] in Serum or Plasma --6th specimen post XXX challenge
thyroxine (t4) free [moles/volume] in serum or plasma --6th specimen post xxx challenge