Value of Postoperative Thyroglobulin and Ultrasonography for the Indication of Ablation and131I Activity in Patients with Thyroid Cancer and Low Risk of Recurrence

Measurement of stimulated Tg combined with neck ultrasonography after total thyroidectomy may exclude the need for ablation in 56% of low-risk patients without TgAb (Tg <1 ng/mL) and permit the administration of an activity of 1.1 GBq ¹³¹I in another 34% with low Tg levels.