Table 1.
Basic information on five commercial RT-qPCR diagnostic test kits for SARS-CoV-2 evaluated in this study.
| Kit | Gene | Template quantity/μl | Reaction system/μl | Number of cycles/Pieces | PCR reaction time (min) | Internal standard type | Declaration of detection limit (copies/ml) | Results interpretation criteria |
||
|---|---|---|---|---|---|---|---|---|---|---|
| Positive | Suspicious | Negative | ||||||||
| Da An | ORF1ab, N | 5 | 25 | 45 | 118 | Endogenous | 500 | Ct ≤ 40 | Ct > 40 | |
| Liferiver | ORF1ab, N, E | 5 | 25 | 45 | 90 | Exogenous | 1,000 | Ct ≤ 43 | Ct > 43 | |
| Kinghawk | ORF1ab, N | 5 | 25 | 40 | 98 | Endogenous | 500 | Ct < 38 | 38 < Ct < 40 | No Ct |
| eDiagnosis | ORF1ab, N | 5 | 25 | 40 | 82 | Endogenous | 500 | Ct < 38 | 38 ≤ Ct < 40 | Ct ≥ 40 |
| Maccura | ORF1ab, N, E | 20 | 40 | 40 | 88 | Exogenous | 1,000 | Ct ≤ 38 | Ct > 38 or No Ct | |