TABLE 4.
Details of discordant sample analysis
| Sample ID |
Reference standard result |
SARS-CoV-2 molecular assay result (CT)a
|
||||
|---|---|---|---|---|---|---|
| Modified CDC (N1/N2) |
DiaSorin Molecular (S/ORF1ab) |
GenMark | Hologic | Comment | ||
| A | NEG | POS (38.9/39.6) | NEG | NEG | NEG | Sample assay was repeated by CDC and determined NEG |
| B | POS | POS (35.5/ 34.5) | POS (31.9/31.8) | NEG | POS (35.0) | Sample assay was repeated by GenMark and determined POS |
| C | POS | POS (35.3/35.0) | POS (29.3/29.9) | NEG | POS (33.0) | Sample assay was repeated by GenMark and determined POS |
| D | NEG | NEG | NEG | NEG | POS (36.2) | Sample assay was repeated by Hologic and determined POS |
| E | NEG | NEG | NEG | NEG | POS (38.5) | Sample assay was repeated by Hologic and determined NEG |
a
Discordant sample results are highlighted in bold. CT, cycle threshold; ID, identifier; NEG, negative; POS, positive.