The aim of this study was to determine BRAF, RAS (K-RAS, H-RAS, N-RAS), and RET/PTC (RET/PTC1, RET/PTC3) gene alterations in thyroid papillary carcinoma and evaluate the utilization of molecular testing in the diagnosis of FNA in a Chinese population. The gene discussed is RET; the disease is differentiated thyroid carcinoma.