title: Estimation of free triiodothyronine in serum: a new method and its clinical relevance.
abstract: We describe a method for estimating free triiodothyronine in serum by polyacrylamide gel filtration. Precise and easy to perform, it avoids the lengthy incubation required for equilibrium dialysis. Results of this procedure correlate well with those by the dialysis method over a wide range of thyroid states. The role of free triiodothyronine as part of a protocol for the evaluation of thyroid status is discussed.
mesh_terms: D002850:Chromatography, Gel / Q000379:methods; D003956:Dialysis; D006801:Humans; D013959:Thyroid Diseases / Q000175:diagnosis; D013974:Thyroxine / Q000097:blood; D014284:Triiodothyronine / Q000097:blood*
chemical_list: D014284:Triiodothyronine; D013974:Thyroxine