Endocrine Abstracts

Introduction: The diagnosis of central hypothyroidism can be challenging and confused with other causes of low thyroxine concentrations without TSH elevation. The response of the thyroid hormone axis before and after treatment is reported in children with Central Hypothyroidism [CH] as part of an exercise aimed at validating free thyroxine reference ranges.Methods: Roche Elecsys Cobas TSH and FT4 immunoassays were used. ...