Since a limitation of our previous study [15] was the lack of a control group of normal pre-menopausal women with normal thyroid function and the lack of in-house age-related AMH reference values, in the present study a large group of normal pre-menopausal females was recruited in order to ascertain whether AMH changes in DTC were RAI- and thyroid pathology-related or age-related. The gene discussed is AMH; the disease is thyroiditis.