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. 2022 Mar 29;12(4):847. doi: 10.3390/diagnostics12040847

Table 3.

Sensitivity, specificity, accuracy, PPV, and NPV of different respiratory samples in comparison with qRT-PCR.

Test Evaluation Nasal and Buccal Nasal Nasopharyngeal
Sensitivity 98% 96% 98%
Specificity 100% 98% 94%
Accuracy 98% 97% 97%
Positive Predictive Value (PPV) 100% 98% 97%
Negative Predictive Value (NPV) 75% 96% 96%