Table 1: Comparison of the phenotypic and genotypic methods for detection of MRSA.

Different methods used for detection of MRSA
Cefoxitin disc diffusionOxacillin broth microdilutionPolymerase chain reaction

Methods to identify MRSA strainsStrains of S. aureus having zone of inhibition of  ≤21 mm to cefoxitin disc (30 μg)Strains of S. aureus having oxacillin MIC of ≥4 μg/mLStrains of S. aureus harboring mecA gene