International Journal of Thyroidology

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Table. 3.

Table. 3.

Cut-off values of FNAC with washout Tg measurement and diagnostic performance according to surgery status

LNs Cut-off value(ng/mL) Discordant results(%) Sensitivity(%) Specificity(%) PPV(%) NPV(%) Accuracy(%)
All LNs (n=707) 2.9 15.0 83.0 81.2 80.2 82.4 81.7
Preoperative LNs (n=295) 2.9 15.3 87.5 83.4 69.4 94.0 84.7
Preoperative LNs (n=295) 9.6 11.5 87.5 88.2 77.0 94.4 88.5
Postoperative LNs (n=412) 2.9 14.8 95.0 86.9 77.2 87.6 89.0
Postoperative LNs (n=412) 2.1 13.3 96.0 90.4 78.1 98.4 91.8

LNs: lymph nodes, NPV: negative predictive value, PPV: positive predictive value

Int J Thyroidol 2021;14:18-27 https://doi.org/10.11106/ijt.2021.14.1.18
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