TSHR and Graves disease: Several days into hospitalization, while undergoing intensive medical therapy, the patient's autoimmune laboratory testing revealed elevated thyrotropin receptor antibody (3.02 IU/L; normal reference range 0.00-1.75 IU/L) and thyroid-stimulating immunoglobulin (2.77 IU/L; normal reference range 0.00-0.55 IU/L) consistent with a diagnosis of Graves disease.