According to the American Thyroid Association (ATA), preparation with recombinant human TSH (rhTSH) stimulation is an acceptable alternative to thyroid hormone withdrawal (THW) for ablation of thyroid remnants with radioactive iodine (RAI) in patients with papillary thyroid carcinoma (PTC) at low or intermediate risk with lymph node (LN) metastases restricted to the central neck compartment (N1a) and discrete/microscopic metastases (1). This evidence concerns the gene TG and differentiated thyroid carcinoma.