Table 2 Overview of the SARS-CoV-2 assay performances over the three External Quality Assessment (EQA) rounds.

Specimen	Number of SARS-CoV-2 assays performed^a	Correct result (%)	Incorrect result (%)	Inconclusive result (%)
Sensitivity
SARS-CoV-2 (SARS2_H)	465	464 (99.8%)	1 (0.2%)	0
SARS-CoV-2 (SARS2_L)^b	943	849 (90.0%)	64 (6.8%)	30 (3.2%)
SARS-CoV-2 (SARS2_Edu)^c	489	252 (51.5%)	196 (40.1%)	41 (8.4%)
SARS-CoV-2 Alpha_H	160	159 (99.4%)	1 (0.6%)	0
SARS-CoV-2 Alpha_L	178	177 (99.4%)	1 (0.6%)	0
SARS-CoV-2 Beta	168	168 (100%)	0	0
SARS-CoV-2 Gamma	168	168 (100%)	0	0
No virus	454	449 (98.9%)	1 (0.2%)	4 (0.9%)
Specificity
SARS-CoV-1^d	454	212 (46.7%)	199 (43.8%)	43 (9.5%)
hCoV-NL63	489	488 (99.8%)	0	1 (0.2%)
hCoV-229E	286	285 (99.7%)	0	1 (0.35%)
hCoV-OC43	286	286 (100%)	0	0
Influenza A(H3N2)	140	140 (100%)	0	0

^aThe numbers of performed tests are not the same for each specimen as several laboratories did not test all materials. Many laboratories performed testing (of a part of the specimens) on multiple platforms. Not all specimens were included in all three EQA panels.
^bPanels contained this specimen as a duplicate.
^cEducational specimen; virus amount below range required for calling positive in screening settings.
^dEducational specimen.

Quick links

Search