TABLE 5.

Ability of the oxacillin susceptibility breakpoint in predicting methicillin susceptibility among mecA-negative, coagulase-negative staphylococcal strains

Staphylococcus species	No. of strains	No. of strains (%) correctly identified as methicillin susceptible by oxacillin susceptibility breakpoint of:
		<4 μg/mla	<0.5 μg/mlb
S. epidermidis	12	100	100
S. haemolyticus	10	100	100
S. hominis	25	96	64
S. simulans	17	94	35
S. wameri	19	100	53
S. capitis	8	50	50
S. cohnii	10	70	10
S. xylosus	6	100	16
S. saprophyticus	66	100	—c

^aPrevious MIC breakpoint. 

^bCurrent MIC breakpoint. 

^c—, no oxacillin testing recommended.