title: Evaluation of T 4 radioimmunoassay as a screening test for thyroid function: comparison with effective thyroxine ratio.
mesh_terms: D000818:Animals; D000937:Antigen-Antibody Reactions; D006801:Humans; D006980:Hyperthyroidism / Q000175:diagnosis; D007037:Hypothyroidism / Q000175:diagnosis; D011817:Rabbits; D011863:Radioimmunoassay; D013960:Thyroid Function Tests / Q000379:methods*; D013974:Thyroxine / Q000097:blood*
chemical_list: D013974:Thyroxine