PetriKey

Lab method

Minimum inhibitory concentration

MIC susceptibility vocabulary

M-I-C

labsusceptibilityantimicrobialmicbreakpoint

High-yield clue

MIC values require standardized breakpoint interpretation; they are not treatment instructions.

Overview

A susceptibility-testing concept describing the lowest concentration that inhibits visible growth under standardized test conditions.

Classification

  • Susceptibility concept
  • Antimicrobial vocabulary

Lab & identification clues

  • MIC number vocabulary
  • Breakpoint concept
  • Broth dilution/E-test terms to recognize

Associations

  • Kirby-Bauer
  • Antimicrobial resistance
  • Susceptibility categories

Commonly confused with

  • Zone of inhibition
  • MBC

Your notes

Original concept summary for coursework. Sources checked: OpenStax Microbiology 2e and NCBI Bookshelf Medical Microbiology; reviewed 2026-06. Describes vocabulary and interpretation concepts only; not a lab protocol and not for handling specimens or identifying patient isolates.

OpenStax: Microbiology 2e staining, media, and biochemical-test foundationssourceNCBI Bookshelf: Medical Microbiology diagnostic concept foundationssource