Thyroid microsomal antibodies are thyroid-related antibodies. Chronic lymphatic thyroiditis and diffuse goiter with hyperthyroidism, also known as Graves’ disease, are thyroid disorders caused by thyroid autoimmunity. Increased levels of thyroid microsomal antibodies are autoantibodies to the thyroid gland produced during the immune process and can be detected in the blood of patients with autoimmune diseases. Elevated levels of thyroid microsomal antibodies are commonly found in patients with chronic lymphatic thyroid disease. In patients with diffuse hyperthyroidism, the level and frequency of antibodies measured may be slightly lower than in patients with chronic lymphatic thyroid disease. In general, when the concentration of antibodies measured in patients with Graves’ disease is low, it is not clinically significant, and they can usually get better. Microsomal thyroid antibody levels are average. If you encounter elevated levels, you may want to pay attention to the presence of hyperthyroidism in clinical Hashimoto’s disease and take treatments specific to Hashimoto’s disease to treat it.