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Table. 2.

Table. 2.

Sensitivities and specificities of the assays

Assay Sensitivity Cases (N=50) Specificity Controls (N=50)
Positive Positive/borderline* Negative Negative/borderline*
% (CI) N % (CI) N % (CI) N % (CI) N
Blot Euro 84 (74–94) 42 88 (79–97) 44 96 (91–100) 48 96 (91–100) 48
Blot LDB 78 (67–89) 39 - - 100 (100–100) 50 - -
CLIA VirC 78 (67–89) 39 82 (71–93) 41 100 (100–100) 50 100 (100–100) 50
ELISA Euro 80 (69–91) 40 90 (82–98) 45 98 (94–100) 49 98 (94–100) 49
ELISA DRG 72 (60–84) 36 78 (67–89) 39 92 (85–100) 46 100 (100–100) 50
ELISA IBL 88 (79–97) 44 96 (91–100) 48 62 (49–75) 31 80 (69–91) 40
ELISA rBio 64 (51–77) 32 72 (60–84) 36 100 (100–100) 50 100 (100–100) 50
ELISA VirC 68 (55–81) 34 84 (74–94) 42 100 (100–100) 50 100 (100–100) 50
LFA VirC 50 (36–64) 25 - - 100 (100–100) 50 - -

*Assay sensitivities after counting the borderline results among the positive samples and test specificities after counting the borderline results among the negatives are only indicated for assays for which borderline cut-off values are defined.

Abbreviations: CI, 95% confidence interval; CLIA, chemiluminescence immunoassay; LFA, lateral flow assay.

Ann Lab Med 2024;44:155~163 https://doi.org/10.3343/alm.2023.0212

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