TABLE 1.

MIC ranges for GRD Etest and standard MICs compared with the Etest macro-method and PAP-AUC

PhenotypeMIC range at indicated time (h)
GRD MHAaGRD MHBbGRD + S MHAcGRD + S MHBdE-MPAP-AUCVAeTPe
VATPVATPVATPVATPVATP
24g48244824482448244824482448244824482448
MSSAf0.5-0.750.75-1.50.5-1.00.5-2.00.5-0.750.75-1.50.5-1.00.75-1.50.5-1.50.5-2.00.75-1.00.75-2.00.5-0.750.75-1.50.75-1.51.0-32-32-41.5-32-60.32-0.840.25-11-2
MRSA0.5-0.750.75-1.00.5-1.01.5-20.75-1.01.0-1.50.5-1.00.75-1.50.5-0.750.5-1.00.5-1.00.5-2.00.5-1.00.75-1.50.75-1.51.0-3.01.5-31.5-32-41.5-40.48-0.860.5- 11.5-2
hGISA0.75-1.01-41-82-320.75-20.75-121.5-322-320.75-21-82-124-241-82-162-326-323-123-121.5-1212-320.91-1.251.5- 61- 12
GISA6-126-1232->32>326-1212-1616-3232->328-1224-3216-3232->328-1616-2416->32>324-168-3212-2416-321.08-1.554-84-16
  • a GRD with MHA.

  • b GRD with MHB.

  • c GRD plus supplements with MHA.

  • d GRD plus supplements with MHB.

  • e MICs were read at 18 h.

  • f MSSA, methicillin-susceptible S. aureus.

  • g After 24 or 48 h.