Table 1 Performance characteristics comparison of the developed qPCR method to those of the rapid antigen test (RAT) and the gold standard culture method for detection of GAS from the 687 throat swabs
From: Development of a fast and low-cost qPCR assay for diagnosis of acute gas pharyngitis
Results | Culture | RAT | QPCR |
|---|---|---|---|
Positive | 204 | 114 | 222 |
Negative | 483 | 573 | 465 |
Prevalence | 29.7 % | 16.6 % | 32.3 % |
Sensitivity | 69.4 % | 100 % | |
Specificity | 100 % | 96.4 % | |
Positive predictive value | 100 % | 92.9 % | |
Negative predictive value | 84.3 % | 100 % |