From: Clinical and epidemiologic characteristics of inconclusive results in SARS-CoV-2 RT-PCR assays
Presumptive results | RT-PCR results | Allplex (re-test) | Real-Q | BioCore | DiaPlexQ | Fleiss’ κ |
---|---|---|---|---|---|---|
Specimens from confirmed cases \((n=124)\) | ||||||
 Presumptive positive (45/124, 36.3%) | Positive | 16 (35.6%) | 40 (88.9%) | 9 (20%) | 43 (95.6%) |  − 0.176 |
Inconclusive | 28 (62.2%) | 5 (11.1%) | 29 (64.4%) | 2 (4.4%) | Â | |
Negative | 1 (2.2%) | 0 (0%) | 7 (15.6%) | 0 (0%) | Â | |
 Presumptive negative (79/124, 63.7%) | Positive | 2 (2.5%) | 4 (5.1%) | 1 (1.3%) | 28 (35.4%) |  − 0.001 |
Inconclusive | 49 (62.0%) | 21 (26.6%) | 59 (74.7%) | 23 (29.2%) | Â | |
Negative | 28 (35.5%) | 54 (68.3%) | 19 (24.0%) | 28 (35.4%) | Â | |
Specimens from screening cases \((n=36)\) | ||||||
 Presumptive negative (36/36, 100%) | Positive | 0 (0%) | 0 (0%) | 0 (0%) | 0 (0%) |  − 0.001 |
Inconclusive | 15 (41.7%) | 3 (8.3%) | 2 (5.6%) | 0 (0%) | Â | |
Negative | 21 (58.3%) | 33 (91.7%) | 34 (94.4%) | 36 (100%) | Â |