Within-subject variation of thyroxine and triiodothyronine concentrations in serum.
Vasikaran
S D
SD
D006801:Humans; D013974:Thyroxine / Q000097:blood*; D014284:Triiodothyronine / Q000097:blood*
D014284:Triiodothyronine; D013974:Thyroxine