The following are the main tests for hyperthyroidism: 1. thyroid hormone measurement: the five items of thyroid function, including thyrotropin (TSH), free T3, free T4, total T3 and total T4. if free T3 and free T4 are elevated and TSH is decreased, accompanied by symptoms of hyperthyroidism, hyperthyroidism can be diagnosed; 2. thyroid autoantibody measurement: hyperthyroidism caused by Graves’ disease or Hashimoto’s thyroiditis, etc. is an autoimmune disease. The detection of thyroid autoantibodies can help identify the cause of hyperthyroidism. 3. Thyroid imaging tests include thyroid ultrasound and thyroid nuclear imaging.