From: Comparison of different sampling techniques and of different culture methods for detection of group B streptococcus carriage in pregnant women
Culture Medium
% Sensitivity
% Specificity
% Positive predictive value
% Negative Predictive value
CNA a
56
84
52
86
GBSDA
95
100
99
CA
96
87
Lim broth + CNA
78
60
93
Lim broth + GBSDA
Lim broth + CA
88