Table 1.

Clinical isolates and identification results from MicroScan, VITEK2, and Crystal GP

Clinical Isolates (using MicroSeq 500)	No of isolates	Correct Identificationa	Low-level Discriminationb	Misidentificationc	Nonidentificationd
		MicroScan
S. capitis	16	13 (81.3%)	-	3 (18.8%)	-
S. caprae	4	-	-	4 (100.0%)	-
S. cohnii	3	1 (33.3%)	1 (33.3%)	1 (33.3%)	-
S. epidermidis	53	51 (96.2%)	-	2 (3.8%)	-
S. haemolyticus	4	3 (75.0%)	1 (25.0%)	-	-
S. hominis	25	23 (92.0%)	2 (8.0%)	-	-
S. lugdunensis	6	2 (33.3%)	1 (16.7%)	3 (50.0%)	-
S. saprophyticus	1	1 (100.0%)	-	-	-
S. simulans	2	2 (100.0%)	-	-	-
S. warneri	6	3 (50.0%)	3 (50.0%)	-	-
Subtotal	120	99 (82.5%)	8 (6.7%)	13 (10.8%)	-
		VITEK 2
S. capitis	16	16 (100.0%)	-	-	-
S. caprae	4	3 (75.0%)	-	1 (25.0%)	-
S. cohnii	3	3 (100.0%)	-	-	-
S. epidermidis	53	47 (88.7%)	6 (11.3%)	-	-
S. haemolyticus	4	4 (100.0%)	-	-	-
S. hominis	25	22 (88.0%)	1 (4.0%)	2 (8.0%)	-
S. lugdunensis	6	5 (83.3%)	1 (16.7%)	-	-
S. saprophyticus	1	1 (100.0%)	-	-	-
S. simulans	2	1 (50.0%)	1 (50.0%)	-	-
S. warneri	6	3 (50.0%)	-	3 (50.0%)	-
Subtotal	120	105 (87.5%)	9 (7.5%)	6 (5.0%)	-
		Crystal GP
S. capitis	16	13 (81.3%)	-	3 (18.8%)	-
S. caprae	4	-	-	4 (100.0%)	-
S. cohnii	3	3 (100.0%)	-	-	-
S. epidermidis	53	49 (92.5%)	-	3 (5.7%)	1 (1.9%)
S. haemolyticus	4	4 (100.0%)	-	-	-
S. hominis	25	1 (4.0%)	-	15 (60.0%)	9 (36.0%)
S. lugdunensis	6	2 (33.3%)	-	3 (50.0%)	1 (16.7%)
S. saprophyticus	1	1 (100.0%)	-	-	-
S. simulans	2	2 (100.0%)	-	-	-
S. warneri	6	6 (100.0%)	-	-	-
Subtotal	120	81 (67.5%)	-	28 (23.3%)	11 (9.2%)

Correct identification^a: single, unambiguous, correct identification at the species level

Low-level discrimination^b: two or more possible species level identification including the correct one

Misidentification^c: genus or species-level identification different from that obtained with the reference method

Nonidentification^d: no identification or unidentification