TABLE 3.

Discrepancy analysis of illumigene GAS assay results

Culture result	RADT result	illumigene GAS assay result	PCR result	Status using ACP criteria	Reference GAS status	No. of cases (%)
Positive	Positive	Positive		Positive	True positive	31 (8.6)
Positive	Positive	Negative	Positive	Positive	True positive	1 (0.3)
Positive	Negative	Positive		Positive	True positive	23 (6.4)
Positive	Negative	Negative		Positive	True negativea	3 (0.8)
Negative	Positive	Positive		Positive	True positiveb	3 (0.8)
Negative	Positive	Negative		Positive	True negative	0 (0.0)
Negative	Negative	Positive	Positive	Negative	True positive	13 (3.6)
Negative	Negative	Positive	Negative	Negative	True negative	10 (2.8)
Negative	Negative	Negative		Negative	True negative	277 (76.7)

^aReview of BAPs revealed colonies of beta-hemolytic streptococci other than GAS.

^bBased on positive RADT results.