The neck 24 hours RAI uptake (upper panel), TSH (mid panel), and Tg in the three study groups. All studies were performed at the time of thyroid hormone withdrawal after lobe ablation (RAI-L-ABL group) completion thyroidectomy (C-Tx group) or total thyroidectomy (T-Tx group). Numbers over bars in the two upper panels indicate mean and SD. RAI, radioiodine; TSH, thyroid-stimulating hormone; Tg, thyroglobulin.