TSH receptor antibodies (TRAb) was performed by binding assay in seventy-seven patients (47 with Graves disease, 32 with other thyroid abnormalities). The sensitivity and specificity of our assay were respectively 81% and 96.5%. These results were similar to the results found in medical literature. The association of ophthalmopathy with Graves disease does not increase the sensitivity of the test. In this study we conclude that TRAb assay is of great interest in confirming the diagnosis and in the following of Graves disease.