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| Patient Sampling | Single‐group (se + sp) |
| Patient characteristics and setting | Patients with suspected infection, no further subgroups Tertiary care centre India |
| Index tests | STANDARD F COVID‐19 Ag FIA test kit Sample: NP |
| Target condition and reference standard(s) | RT‐PCR |
| Flow and timing | Sample size (cases): 354 (136) |
| Comparative | |
| Notes | Ag result read by analyser |
