M. Kubina et al., Oxacillin susceptibility testing of staphylococci directly from bactec plus blood cultures by the BBL crystal MRSA ID system, J CLIN MICR, 37(6), 1999, pp. 2034-2036
The BBL Crystal MRSA ID test (Becton Dickinson) was applied directly to blo
od culture vials containing clusters of gram-positive cocci. The sensitivit
y and specificity of the test were 84 and 100% and 54 and 100% for vials co
ntaining Staphylococcus aureas and coagulase-negative staphylococci, respec
tively. This test is a reliable method for direct detection of methicillin
resistance in positive blood culture vials when S. aureus is identified in
parallel by rapid identification procedures.