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In patients who have had thyroid cancer and been treated with the use of radioactive iodine, what would be the most sensitive test to let them know that there may still be some thyroid tissue left?

April 26, 2017cancer Iodine let Patients radioactive sensitive Test Thyroid tissue treated

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In patients who have had thyroid cancer and been treated with the use of radioactive iodine, what would be the most sensitive test to let them know that there may still be some thyroid tissue left?

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We follow patients with thyroglobulin levels. If there is any thyroid tissue available in the body that tissue will try to make thyroglobulin. We would like to see the thyroglobulin levels down at zero post ablative I-131 therapy.