Nationwide External Quality Assessment of SARS-CoV-2 Molecular Testing, South Korea
Heungsup Sung
1 , 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 Min
1
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)
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Figure 2
Figure 2. Protocols used for laboratories that reported >1 outliers in results of real-time RT-PCR tests for severe acute respiratory syndrome coronavirus 2, South Korea, March 23–27, 2020. The flow diagram shows the variations in specimens tested, RNA extraction platforms, PCR reagents and amplification platforms, and sample volume equivalent RNA input used in the PCR reaction. The weight of the lines reflects the number of laboratories using a particular step. Numbers in the circles indicate number of laboratories. RT-PCR, reverse transcription PCR.
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