Table 10.
Comparative analysis of CoroSuchak with other two ICMR approved COVID-19 ELISA kits
| Test parameters | CoroSuchak | Kit-1 | Kit-2 | |||
|---|---|---|---|---|---|---|
| Mfg. 01/2021 | Exp.-06/2022 | Mfg. 12/2020 | Exp. 11/2021 | Mfg. 07/2020 | Exp. 06/2021 | |
| Absorbance | Results | Absorbance | Results | Absorbance | Results | |
| Blank | 0.000 | - | - | - | - | - |
|
Negative control |
0.031 | Negative | 0.05 | Negative | 0.177 | Negative |
|
Negative control |
0.032 | Negative | 0.086 | Negative | 0.124 | Negative |
|
Negative control |
0.039 | Negative | 0.063 | Negative | 0.125 | Negative |
| Mean of NCx | 0.034 | - | 0.066 | - | 0.142 | - |
|
Positive control |
0.926 | Positive | 1.074 | Positive | 1.849 | Positive |
|
Positive control |
0.937 | Positive | 1.025 | Positive | 1.83 | Positive |
| Mean of PCx | 0.931 | - | 1.049 | - | 1.839 | - |
| Cut-off value | Mean of NCx + 0.200 | 0.234 | Mean of NCx + 0.200 | 0.266 | Mean of NCx + 0.200 | 0.342 |
| Known non-reactive samples/true negative samples | ||||||
| Sample ID No | Abs | Results | Abs | Results | Abs | Results |
| 9 | 0.049 | Negative | 0.08 | Negative | 0.153 | Negative |
| 12 | 0.042 | Negative | 0.051 | Negative | 0.075 | Negative |
| 14 | 0.050 | Negative | 0.047 | Negative | 0.094 | Negative |
| 15 | 0.052 | Negative | 0.081 | Negative | 0.193 | Negative |
| 17 | 0.050 | Negative | 0.062 | Negative | 0.095 | Negative |
| 19 | 0.049 | Negative | 0.036 | Negative | 0.100 | Negative |
| 21 | 0.042 | Negative | 0.046 | Negative | 0.105 | Negative |
| 24 | 0.038 | Negative | 0.063 | Negative | 0.094 | Negative |
| 25 | 0.039 | Negative | 0.056 | Negative | 0.116 | Negative |
| 27 | 0.052 | Negative | 0057 | Negative | 0.077 | Negative |
| 32 | 0.038 | Negative | 0.044 | Negative | 0.088 | Negative |
| 36 | 0.049 | Negative | 0.043 | Negative | 0.095 | Negative |
| 37 | 0.053 | Negative | 0.043 | Negative | 0.133 | Negative |
| 38 | 0.050 | Negative | 0.056 | Negative | 0.068 | Negative |
| 39 | 0.043 | Negative | 0.086 | Negative | 0.099 | Negative |
| 43 | 0.051 | Negative | 0.036 | Negative | 0.115 | Negative |
| 44 | 0.041 | Negative | 0.046 | Negative | 0.150 | Negative |
| 46 | 0.042 | Negative | 0.102 | Negative | 0.121 | Negative |
| 47 | 0.050 | Negative | 0.095 | Negative | 0.096 | Negative |
| 49 | 0.050 | Negative | 0.061 | Negative | 0.107 | Negative |
| Known reactive/true-positive samples | ||||||
| 16 | 0.384 | Positive | 2.155 | Positive | 1.208 | Positive |
| 18 | 0.532 | Positive | 2.363 | Positive | 3.356 | Positive |
| 20 | 0.309 | Positive | 1.124 | Positive | 1.919 | Positive |
| 22 | 0.429 | Positive | 0.705 | Positive | 3.322 | Positive |
| 272 | 0.478 | Positive | 0.715 | Positive | 3.271 | Positive |
| 30 | 0.501 | Positive | 0.356 | Positive | 2.904 | Positive |
| 31 | 0.492 | Positive | 0.85 | Positive | 2.05 | Positive |
| 83/II | 0.526 | Positive | 2.106 | Positive | 3.568 | Positive |
| 83/IV | 0.487 | Positive | 1.872 | Positive | 3.24 | Positive |
| 216 | 0.498 | Positive | 0.705 | Positive | 2.584 | Positive |
| 122 | 0.406 | Positive | 0.578 | Positive | 1.814 | Positive |
| 131 | 0.318 | Positive | 0.728 | Positive | 2.162 | Positive |
| 140/II | 0.394 | Positive | 1.453 | Positive | 2.797 | Positive |
| 140/III | 0.301 | Positive | 1.27 | Positive | 2.881 | Positive |
| 292/III | 0.392 | Positive | 2.249 | Positive | 3.653 | Positive |
| 292/IV | 0.365 | Positive | 2.316 | Positive | 3.641 | Positive |
| 314/III | 0.279 | Positive | 2.184 | Positive | 3.086 | Positive |
| 314/IV | 0.318 | Positive | 2.21 | Positive | 3.235 | Positive |
| 315/III | 0.406 | Positive | 1.23 | Positive | 3.097 | Positive |
| 375 | 0.462 | Positive | 2.08 | Positive | 3.252 | Positive |