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Comparison of SQ-RAT performance in fresh and frozen-thawed specimens
| Ct (RdRp) | SQ-RAT results | |||
|---|---|---|---|---|
| Agreement | Disagreement | Sum | ||
| Positive | Negative | |||
| 5.0–14.9 | 11 | 0 | 0 | 11 |
| 15.0–19.9 | 13 | 0 | 0 | 13 |
| 20.0–24.9 | 6 | 7 | 0 | 13 |
| 25.0–29.9 | 0 | 6 | 0 | 6 |
| 30.0–34.9 | 0 | 10 | 0 | 10 |
| Negative | 0 | 30 | 0 | 30 |
| Sum | 30 | 53 | 83 | |
Abbreviations: SQ-RAT, Standard Q COVID-19 rapid antigen test; Ct, threshold cycle; RdRp, RNA-dependent RNA polymerase.
