TABLE 1.

Performance characteristics of STRB, NNA, and LIM broth

Medium	No. of GBS-positive specimens	Sensitivity (%)	Specificity (%)
STRB	71	87.7	97.6
NNA	64	79.0	97.6
LIM	74	91.4	100
LIM or STRB	81	100	100
LIM or NNA	81	100	100