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. 2020 Sep 4;10:470. doi: 10.3389/fcimb.2020.00470

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Copyright © 2020 Li, Wang, Wang, Li, Zhang, Xu and Wei.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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ROC curve of serum SARS-COV-2 N protein, area under the ROC curve is 0.9756, 95% confidence interval (CI) is 0.9485 to 1.000, p-value is lower 0.0001, sensitivity and specificity are 92% (95% CI 81.16 to 96.85%) and 96.84% (95% CI 95.17 to 97.15%), respectively. The best CUT-OFF value is 1.850 pg/mL.