You will have lifelong follow-up with your endocrinologist and sometimes your surgeon. At a minimum, yearly blood tests to measure the level of thyroglobulin (thyroid tumor marker), thyroglobulin antibodies, and TSH (level of thyroid hormone suppression) will be checked. Depending on your specific type of cancer, these blood tests may be more frequent. A neck ultrasound is another common diagnostic test that you will likely have during your cancer follow-up. The frequency of ultrasounds will depend on your specific cancer and your treating physician. Other tests may be ordered at the discretion of your physician.