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Table 1 Point-of-Care test results of AgPOCT compared to NAAT of samples tested within 24 h

From: Performance of antigen testing for diagnosis of COVID-19: a direct comparison of a lateral flow device to nucleic acid amplification based tests

SARS-CoV2

Entire cohort

Asymptomatic patients

Symptomatic patients

Ag positive

Ag negative

 

Ag positive

Ag negative

 

Ag positive

Ag negative

 

NAAT positive

57

39

 

20

22

 

34

17

 

NAAT negative

31

2983

 

25

2273

 

6

192

 

Sensitivity (%)

  

59.4

  

47.6

  

66.7

Specificity (%)

  

99.0

  

98.9

  

97.0

PPV (%)

  

64.8

  

44.4

  

85.0

NPV (%)

  

98.7

  

99.0

  

91.9