Table 2.

Performance of the BC-GP assay at Sakakibara Heart Institute.

Organism	BC-GP (total)				BC-GP (monomicrobial cultures)
	Number of organisms	Number (%) of isolates			Number of organisms	Number (%) of isolates
		Correctly identified	Not detected	Incorrectly identified		Correctly identified	Not detected	Incorrectly identified
Staphylococcus	24	24 (100)			22	22 (100)
S. aureus	7	7 (100)			7	7 (100)
Methicillin-sensitive	6	6 (100)			6	6 (100)
Methicillin-resistant	1	1 (100)			1	1 (100)
S. epidermidis	12	12 (100)			11	11 (100)
Methicillin-sensitive	2	2 (100)			2	2 (100)
Methicillin-resistant	10	10 (100)			9	9 (100)
S. lugdunensis	1	1 (100)			1	1 (100)
Other CNS	4	4 (100)			3	3 (100)
S. hominis	2	2 (100)			2	2 (100)
S. haemolyticus	1	1 (100)
S. capitis	1	1 (100)			1	1 (100)
Streptococcus	8	8 (100)			8	7 (87)		1 (13)b
S. pyogenes	1	0 (0)		1 (100)a	1	0 (0)		1 (100)b
S. agalactiae	1	1 (100)			1	1 (100)
S. anginosus group	2	2 (100)			2	2 (100)
S. anginosus	2	2 (100)b			2	2 (100)c
Other streptococci	4	4 (100)			4	4 (100)
S. oralis	2	2 (100)			2	2 (100)
S. sanguinis	1	1 (100)			1	1 (100)
S. parasanguinis	1	1 (100)			1	1 (100)
Enterococcus	2	1 (50)	1 (50)
E. faecalis	1	0 (0)	1 (100)c
Vancomycin-sensitive	1	0 (0)	1 (100)c
E. faecium	1	1 (100)
Vancomycin-sensitive	1	1 (100)
Listeria spp.	1	1 (100)			1	1 (100)
Total	35	33 (94)	1 (3)	1 (3)	31	30 (97)		1 (3)
Other nontarget Gram-positives	1				1
Corynebacterium striatum	1				1
Total isolates	36				32

^aIdentified to the genus level, but not to the species level.

^b“S. anginosus group” identified by the BC-GP assay is defined as “correctly identified” for each species.

^cPolymicrobial culture with S. epidermidis.