In the 149 lymph nodes from patients with thyroids, the cutoff value for FNA-Tg was 55.99 ng/mL (sensitivity, 95.1%; specificity, 100%), whereas in the 47 lymph nodes from patients without thyroids, it was 9.71 ng/mL (sensitivity, 96.7%; specificity, 100%). The gene discussed is TG; the disease is thyroiditis.