Laboratory Medicine and Quality Assurance

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Fig. 2. Comparison of the E gene cycle threshold (Ct) values by extraction reagent for laboratories using the Standard M nCoV Real-Time Detection Kit (No. 94; A, C) and the Allplex SARS-CoV-2 Assay (No. 56; B, D) in the first challenge. Mid-level positive samples using Standard M reagents (A) and Allplex reagents (B). Low-level positive samples using Standard M reagents (C) and Allplex reagents (D). Extraction kits: 1, Genolution Viral NA kit; 2, AdvanSure R; 3, Seegene STARMag; 4, TANBead optipure prep; 5, Libex Viral DNA and RNA Extraction Kit; 6, Viral Nucleic Acid, Small or Large Volume Kit; 7, Real-Prep Viral DNA/RNA kit; 8, Alphagene Nucleic Acid Extraction Kit; 9, Seegene proprep; 10, QIAamp Viral RNA Mini Kit; 11, QIAsymphony DSP Virus/Pathogen Kit; 12, NucleiSens easyMAG; 13, PANAMAX Viral DNA/RNA Extraction Kit; 14, Chemagic Viral DNA/RNA 300 Kit; 15, RADI 32 Viral DNA/RNA Extraction Kit; 16, Smart Lab Assist extraction kit; and 17, others.
Lab Med Qual Assur 2023;45:166~172 https://doi.org/10.15263/jlmqa.2023.45.4.166
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