How Is the Potency of an Antibiotic Determined

question 53

Multiple Choice

How is the potency of an antibiotic determined?

• A) It prevents growth of the largest percentage of bacteria in an IC₅₀ test.
• B) The lowest concentration inhibits growth of 50% of the bacteria in an IC₅₀ test.
• C) The highest concentration inhibits growth of 50% of the bacteria in an IC₅₀ test.
• D) The largest ring of inhibition is seen in the disk diffusion test.

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