title: Euthyroid sick syndrome and free thyroxine assay.
mesh_terms: D003937:Diagnosis, Differential; D006801:Humans; D007037:Hypothyroidism / Q000175:diagnosis*; D013960:Thyroid Function Tests / Q000379:methods*; D013974:Thyroxine / Q000097:blood*; D014284:Triiodothyronine / Q000097:blood
chemical_list: D014284:Triiodothyronine; D013974:Thyroxine