Table 2.

Test characteristics as determined by sampling historic and current sera from 38 patients who were SARS-CoV-2 RT-PCR positive

ResultAbbottFortress DiagnosticsBiomedomics (LFIA)
Historic negative controls
 Positive000
 Negative383838
Positive controls
 Positive263532
 Negative1236
Sensitivity68.4 (51.3–82.5)92.1 (78.6–98.3)84.2 (68.7–94.0)
Specificity100.0 (92.3–100.0)100.0 (92.3–100.0)100.0 (92.3–100.0)
Positive predictive value100.0100.0100.0
Negative predictive value79.3 (70.6–6.0)93.9 (83.8–97.8)88.5 (78.6–94.1)
Accuracy85.7 (76.4–92.4)96.4 (89.9–99.3)92.9 (85.1–97.3)