TG and lymphadenitis: The values for Tg-FNA ranged from 0.642 ng/mL to 500+ ng/mL (median 500+ ng/mL) in metastatic PTC lymph nodes; from 0.04 ng/mL to 13.06 ng/mL (median 1.525 ng/mL) in lymphadenitis; and from 0.1 to 52.2 ng/mL in metastases from extrathyroidal malignancies (median 1.24 ng/mL).