Endocrine Abstracts

Background: Measurements of thyrotropin (TSH), free thyroxine (FT4) and triiodothyronine (FT3) are widely used diagnostic methods for thyroid function evaluation. However, some serum samples will demonstrate a nonspecific binding with assay reagents that can interfere with the measurement of these hormones. Few case reports of TSH interfering antibodies have described the presence of such interferences resulting in reported abnormal concentrations of thyroid hormones. Unusual ...