Diagnostic performances of FNA-Tg according to the presence of serum TgAbs.

Data in parentheses are 95% confidence intervals.aCutoff value of FNA-Tg was 19.9 ng/mL.bCutoff value of FNA-Tg was 38.3 ng/mL.cp-value between the sTgAb- and sTgAb+ groups when applying the same FNA-Tg cutoff value of 19.9 ng/mL (sTgAb-a vs. sTgAb+ b).dp-value between the sTgAb- group with a FNA-Tg cutoff value of 19.9 ng/mL and the sTgAb+ group with a FNA-Tg cutoff value of 38.3 ng/ mL (sTgAb-a vs. sTgAb+ b).FNA-Tg, thyroglobulin level in FNA washout fluid; sTgAb-, undetectable serum TgAbs; sTgAb+, detectable serum TgAbs; PPV, positive predictive value; NPV, negative predictive value; AUC, the area under the ROC curves.Diagnostic performances of FNA-Tg according to the presence of serum TgAbs.