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Volume 26, Number 10—October 2020
Synopsis

Nationwide External Quality Assessment of SARS-CoV-2 Molecular Testing, South Korea

Heungsup Sung1Comments to Author , Myung-Guk Han, Cheon-Kwon Yoo, Sang-Won Lee, Yoon-Seok Chung, Jae-Sun Park, Mi-Na Kim, Hyukmin Lee, Ki Ho Hong, Moon-Woo Seong, Kyunghoon Lee, Sail Chun, Wee Gyo Lee, Gye-Cheol Kwon, and Won-Ki Min1Comments to Author 
Author affiliations: University of Ulsan College of Medicine and Asan Medical Center, Seoul, South Korea (H. Sung, M.-N. Kim, S. Chun, W.K. Min); Korea Centers for Disease Control and Prevention, Chungcheongbuk-do, South Korea (M.-G. Han, C.-K. Yoo, S.-W. Lee, Y.-S. Chung, J.-S. Park); Yonsei University College of Medicine, Seoul (H. Lee); Seoul Medical Center, Seoul (K.-H. Hong); Seoul National University College of Medicine, Seoul (M.-W. Seong, K. Lee); Ajou University School of Medicine, Suwon, South Korea (W.G. Lee); Chungnam National University School of Medicine, Daejeon, South Korea (G.-C. Kwon)

Main Article

Figure 3

Semiquantitative real-time reverse transcription PCR Ct values for severe acute respiratory syndrome coronavirus 2 proficiency panel samples tested by PowerChek and Allplex 2019-nCoV kits, South Korea, March 23–27, 2020. Horizontal line within each box denotes the median value; x indicates the mean; top and bottom of box indicate third and first quartiles, respectively; error bars indicate minimum and maximum values; dots indicate outlier results. E gene (A) and RdRp gene (B) Ct values were from

Figure 3. Semiquantitative real-time reverse transcription PCR Ct values for severe acute respiratory syndrome coronavirus 2 proficiency panel samples tested by PowerChek and Allplex 2019-nCoV kits, South Korea, March 23–27, 2020. Horizontal line within each box denotes the median value; x indicates the mean; top and bottom of box indicate third and first quartiles, respectively; error bars indicate minimum and maximum values; dots indicate outlier results. E gene (A) and RdRp gene (B) Ct values were from 67 laboratories using the PowerChek 2019-nCoV reagents; E gene (C), RdRp gene (D), and N gene (E) Ct values were from 38 laboratories using the Allplex 2019-nCoV reagents. Ct, cycle threshold.

Main Article

1These authors contributed equally to this article.

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