KnowraTriiodothyronineLinked fromLinked fromThe 8 pages that link to Triiodothyronine, each with the reason it gives.All 8Broader topic 3Related 4Compared with 1Thyroid-stimulating hormoneRelated: TSH supports its production, both directly in the thyroid and through T4 supply.Thyroid function testsRelated: T3 measurement can uncover or clarify hyperthyroidism when TSH is suppressed.LevothyroxineRelated: Conversion of levothyroxine-derived T4 to T3 supplies much of the active hormone.Central hypothyroidismRelated: Its concentration may remain less reduced than thyroxine in some cases.