T3/T4 ratio in thyroid disease.
D003937:Diagnosis, Differential; D006111:Graves Disease / Q000097:blood / Q000175:diagnosis*; D006801:Humans; D006980:Hyperthyroidism / Q000097:blood / Q000175:diagnosis*; D013974:Thyroxine / Q000097:blood*; D014284:Triiodothyronine / Q000097:blood*
D014284:Triiodothyronine; D013974:Thyroxine