TG and subacute thyroiditis: Pacini et al. [3] reported serum Tg in normal individuals to be 9.5 ± 0.9 μg/L (mean ± SE), in untreated and treated subjects with diffuse toxic goiter 424 ± 101 and 328 ± 222 ug/L, respectively, in nontoxic goiter 61.4 ± 15 μg/L, in untreated differentiated thyroid carcinoma 89.5 ± 19 μg/L and in subacute thyroiditis 138 ± 67 ug/L.