Both Graves’ disease (GD) and Hashimoto’s thyroiditis (HT) are autoimmune diseases of thyroid gland.[1] GD is a genetic disorder and is the most common cause of hyperthyroidism and characterized by circulating thyroid-stimulating hormone receptor autoantibodies with thyroid-stimulating activity.[2] On the other hand, HT is the most common cause of hypothyroidism.[3,4] Pathologically, the disease is characterized by marked lymphocytic infiltration of the thyroid.[5]. Here, TSHR is linked to hematocrit.