Question

Define what a MIC > 32 µg/mL means. What result would be expected? What does the test result tell us about the strain?d

Answer 1

MIC value means Minimum Inhibitory Concentration. This is the minimum concentration of an antibiotic which inhibits growth of a particular bacteria or bacterial strain. This is expressed in μg/mL unit. Here MIC greater than 32 μg/mL means that if we add 32 μg/mL concentration of the antibiotic, then we can observe inhibition of bacterial growth. Below this concentration there will be no visible growth inhibition for the antibiotic.

This MIC value is found to be higher in comparison to normal MIC value found. So Bacterial strain may be inherited resistance between this antibiotic, so that a high concentration is required for its growth inhibition. So, this strain may be resistant to some extent against the applied antibiotic.