Approach to the Hashimoto thyroiditis patient with thyroid hormone autoantibodies / 中华内分泌代谢杂志

ABSTRACT

To discuss the clinical features and treatment of a 27-year-old female patient with Hashimoto thyroiditis and thyroxine autoantibody(T 4Ab) positive complained of abnormal thyroid function. The patient had no special clinical manifestations. Multiple measurements of thyroid function showed that surum FT 4 and TT 4 were elevated, while FT 3 and TT 3 remained normal, TSH was mainly elevated(occasionally normal or slight inhibited). We considered the possibility of the existence of laboratoury errors based on the inconsistency between the laboratory examination and clinical features, and the presence of T 4Ab was effectively confirmed by radioimmunoassay after comparing the test results of different methods and immunoprecipitation method. THAAb is a relatively rare antibody, which often leads to clinical misdiagnosis or even mistreatment. Therefore, clinicians should pay great attention to it.