The Minimum Bactericidal Concentration (MBC) is the lowest concentration of antibiotic required to kill the germ. Not as commonly seen as the Minimum inhibitory concentration

Minimum inhibitory concentration

In microbiology, minimum inhibitory concentration is the lowest concentration of an antimicrobial that will inhibit the visible growth of a microorganism after overnight incubation. Minimum inhibitory concentrations are important in diagnostic laboratories to confirm resistance of microorganisms...

 (MIC). It can be determined from broth dilution MIC tests by subculturing to agar media without antibiotics. Antimicrobials are usually regarded as bactericidal if the MBC is no more
than four times the MIC

See also

• MIC
  Minimum inhibitory concentration
  In microbiology, minimum inhibitory concentration is the lowest concentration of an antimicrobial that will inhibit the visible growth of a microorganism after overnight incubation. Minimum inhibitory concentrations are important in diagnostic laboratories to confirm resistance of microorganisms...
  
  
• MFC
• MSC