TG and hyperthyroidism: As shown in Figure 3, 58/152 (49.2%) subjects had anti-Tg prior to the onset of subclinical/overt hyperthyroidism, 7/152 (5.9%) had anti-Tg parallel to the onset of subclinical/overt hyperthyroidism, 0/42 (0%) had anti-Tg following the onset of subclinical/overt hyperthyroidism, and 53/152 (44.9%) had no anti-Tg.