Table 3 Diagnostic accuracy of 0.8% Immulab, Bio-rad, Grifols and QuidelOrtho RRBCs. The sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV) and accuracy of Immulab RRBCs compared to Bio-rad (test script 1), Grifols (test script 2) and QuidelOrtho (test script 3) 0.8% RRBCs with 95% confidence intervals (95% CI)
Test Script 1: Immulab and Bio-Rad | Test Script 2: Immulab and Grifols | Test Script 3: Immulab and Ortho | ||||
|---|---|---|---|---|---|---|
Immulab 0.8% Abtectcell III | Bio-Rad 0.8% ID-DiaCell I-II-III | Immulab 0.8% Abtectcell III | Grifols 0.8% Perfect Screen 3 | Immulab 0.8% Abtectcell III | QuidelOrtho 0.8% Surgiscreen | |
True-positive | 72 | 69 | 80 | 66 | 69 | 66 |
False-positive | 0 | 0 | 0 | 0 | 0 | 0 |
True-negative | 15 | 15 | 8 | 8 | 24 | 24 |
False-negative | 0 | 3 | 0 | 14 | 0 | 3 |
Sensitivity (%) (95% CI) | 100 (95.01–100) | 95.83 (88.30–99.13) | 100 (95.49–100) | 82.50 (72.38–90.09) | 100 (94.79–100) | 95.65 (87.82–99.09) |
Specificity (%) (95% CI) | 100 (78.20–100) | 100 (78.20–100) | 100 (63.06–100) | 100 (63.06–100) | 100 (85.75–100) | 100 (85.75–100) |
PPV (%) (95% CI) | 100 | 100 | 100 | 100 | 100 | 100 |
NPV (%) (95% CI) | 100 (78.20–100) | 83.33 (58.58–96.42) | 100 (63.06–100) | 36.36 (17.20–59.34) | 100 (85.75–100) | 88.89 (70.84–97.65) |
Accuracy (%) (95% CI) | 100 (95.85–99.97) | 96.55 (90.25–99.28) | 100.00 (95.89–100) | 84.09 (74.75–91.02) | 100 (96.11–100) | 96.77 (90.86–99.33) |