MIC break- point er i følge Clinical and Laboratory Standards Institute (før National Committee for Clinical Laboratory Standards) er 8 µg/ ml (følsom), 16- 32 µg/ ml (intermediate) og 64 µg/ ml (resistent) overfor Entrobakterier og Staphylococcuss spp.
Die MHK-Breakpoints liegen nach Angaben des “ Clinical and Laboratory Standards Institute” (CLSI), (früher: