Table 1 Accuracy assessment: comparison of sequencing results in the context of an EQA round trial organized by the NRC for two samples typed by our lab and by two independent labs.

From: Minimal requirements for ISO15189 validation and accreditation of three next generation sequencing procedures for SARS-CoV-2 surveillance in clinical setting

Testing lab

Laboratory 1

Laboratory 2

Laboratory 3

Laboratory 4

CHU UCL Namur

CHU UCL Namur

CHU UCL Namur

Extraction method

N. A.

Seegene- STARMag Universal Cartridge (Allplex SARS-CoV-2 One-Step Protocol)

N. A.

Maxwell RSC Viral-Total Nucleic Acid Purification kit /MaxWell RSC-system (Promega)

MagMAXTM Viral/Pathogen Kit (KingFisherTM)

MagMAXTM Viral/Pathogen Kit (KingFisherTM)

Seegene- STARMag Universal Cartridge (Allplex SARS-CoV-2 One-Step Protocol)

Sequencing Method

ONT

Illumina CleanPlex SARS-CoV-2 Flex Panel-SOPHiADDM

Ampliseq- Illumina

ONT-GridION Artic Network

ONT: SARS-CoV2 genome sequencing protocol v1200 “midnight”

ONT: SARS-CoV2 genome sequencing protocol v3

Illumina: EasySeq SARS-Cov-2 WGS-Nimagen

Sample UZL_ CV10_07

WHO

Alpha

Alpha

Alpha

Alpha

Alpha

NextClade

20I

20I

20I

20I

20I

Pangolin

B.1.1.7

B.1.1.7

B.1.1.7

B.1.1.7

B.1.1.7

Sample UZL_ CV10_89

WHO

Delta

Delta

Delta

Delta

Delta

NextClade

21J

21J

21J

21J

21J

Pangolin

AY.39

B.1.617.2

AY.126

AY.126

AY.126

  1. Laboratories 1 and 2 sequenced and analyzed sample UZL_CV10_07 and laboratories 3 and 4 sample UZL_CV10_89. Both samples were sequenced and analyzed using the three different methods in our lab.