TABLE 1.

Comparison of NCCLS breakpoints and LA test results with PCR results

Category	No. of isolates
	Total	Oxacillin MIC		LA test
		≤0.25 mg/liter	≥0.5 mg/liter	Positive	Negative
mecA positive	251	0	251	251	0
mecA negative	212	129	83	1	211