The minimum inhibitory concentration (MIC) result recorded in antimicrobial testing can be defined as the:
a. lowest concentration of antimicrobial agent that should be used for optimal therapy.
b. highest concentration of antimicrobial agent that should be used for optimal therapy.
c. lowest antimicrobial agent concentration that completely inhibits visible bacterial growth.
d. highest antimicrobial agent concentration that completely inhibits visible bacterial growth.
C
The MIC is an in vitro measurement obtained by testing a series of dilutions of each antibiotic against a standard inoculum of the bacterial isolate being tested, the microdilution well contain-ing the lowest drug concentration that completely inhibits visible bacterial growth is recorded as the MIC.
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