TABLE 1.

Identification results obtained with the ID-GPC card of the VITEK 2 system for 405 Staphylococcus sp. isolates

Taxonb	No. (%)a of isolates
	Tested	Correctly identified		Identified with low discrimination	Misidentified	Not identified
		Without supplemental testsc	With supplemental testsc
S. aureus	130	129 (99.2)	1 (0.8)	0 (0.0)	0 (0.0)	0 (0.0)
S. capitis	18	17 (100)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)
S. cohnii subsp. cohnii	3	3	0	0	0	0
S. cohnii subsp. urealyticum	1	1	0	0	0	0
S. epidermidis	140	133 (95.0)	3 (2.2)	0 (0.0)	0 (0.0)	4 (2.8)
S. haemolyticus	50	48 (96.0)	0 (0.0)	2 (4.0)	0 (0.0)	0 (0.0)
S. hominis	32	17 (53.1)	4 (12.5)	10 (31.3)	1 (3.1)	0 (0.0)
S. lugdunensis	8	8	0	0	0	0
S. schleiferi	2	2	0	0	0	0
S. simulans	8	8	0	0	0	0
S. warneri	11	10 (90.9)	0 (0.0)	1 (9.1)	0 (0.0)	0 (0.0)
S. xylosus	2	2	0	0	0	0
Total	405	379 (93.6)	8 (2.0)	13 (3.2)	1 (0.2)	4 (1.0)

^aPercentages were calculated only when more than 10 strains were evaluated.

^bDefinitive identification obtained with the comparison method (see Materials and Methods) and confirmed when necessary by the molecular method described in reference 32.

^cSupplemental tests suggested by the VITEK 2 manufacturer.