Thyroglobulin 5 includes total T3, total T4, free T3, free T4 and TSH, but some hospitals refer to free T3, free T4, TSH, TPO antibody and TG antibody; Thyroglobulin 7 includes total T3, total T4, free T3, free T4, TSH, TPO antibody and TG antibody, which can assist in the diagnosis of autoimmune diseases. The five thyroid function tests include thyroid hormone and thyroid stimulating hormone, which can directly observe whether the patient suffers from hyperthyroidism, hypothyroidism and other thyroid function abnormalities. The test items and reference ranges may vary from hospital to hospital. In addition to thyroid hormone and thyroid stimulating hormone, thyroid autoantibodies are also included in the 7-phase thyroid test. In addition to looking at thyroid function, it is also able to determine the presence of autoimmune thyroid diseases, such as Hashimoto’s thyroiditis and Graves’ disease. If you are not sure whether you need to take a thyroid 5 or 7 test, it is recommended that you consult your doctor, and if the results are abnormal, it is recommended that you go to the hospital.