Abstract
Graves disease (GD) is defined as hyperthyroidism with diffuse goiter caused by immunogenic disturbances. Antibodies to the thyroid stimulating hormone (TSH) receptors of thyroid gland (TRAb) have crucial pathogenetic importance in the development and maintenance of autoimmune hyperthyroidism. The aim of this study was to identify sensitivity, specificity, positive an negative predictive velue of TRAb level in sera of patients with GD as well as to estimate significance of TRAb level for remission and GD relapses occurrence. We studied prospectively and partly retrospectively 149 patients, 109 female and 40 male patients, 5-78 years old, in the period 1982-2007. There were 96 patients with GD. The control group consisted of 53 patients, 21 with hyperthyroidism of second etiology and 32 patients on amiodarone therapy, with or without thyroid dysfunction TRAb was measured by radioreceptor assay (TRAK Assay and DYNO Test TRAK Human Brahms Diagnostica GMBH). According to the results the sensitivity (Sn) of TRAb test was 80%, specificity (Sp) 100%, positive predictive value (PP) 100% and negative predictive value (NP) 83%. Also, the Sn of hTRAb test was 94%, Sp 100%, PP 100% and NP 94%. Our results show that an increased level of TR...Continue Reading
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