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Diagnostic tests for severe acute respiratory syndrome coronavirus
| RT-PCR | Detection Rates |
|---|---|
| Nasopharyngeal aspirate | Conventional RT-PCR: 32% day 3; 68% day 1432 Second-generation with real-time quantitative RT-PCR assay: 80% during first 3 d73 |
| Stool32 | 97% day 14 of illness |
| Urine32 | 42% day 15 of illness |
| Real-time quantitative serum SARS-CoV RNA74, 75 | 80% day 1; 75% day 7; 45% day 14 |
| Serology IgG seroconversion to SARS-CoV32 | 15% day 15; 60% day 21; >90% day 28 |
