Test Overview
Test Methodology

Minimum Bactericidal Concentration (MBC) and Minimum Inhibitory Concentration (MIC)

Test Usage

Determining the in vitro susceptibility of aerobic bacteria involved in human infections. An MBC identical to or very close to a sufficiently low MIC indicates that significant killing of the organism has occurred. A "susceptible" category result and a low MIC value indicate in vitro susceptibility of the organism to the antimicrobial tested. Both the MIC and MBC should be within the range of usually achievable antibiotic blood levels for the organism to be considered "susceptible" (inhibited or killed) to the antimicrobial.

Reference Range *

Interpretive report provided.

Test Details
Days Set Up
Monday - Friday
Analytic Time

2 - 5 days

Soft Order Code
  • Antibiotic Combination Studies
  • Antimicrobial Synergy Study
  • Synergy Studies, Antibiotic
  • Antimicrobial Susceptibility, MBC
  • MBC
  • Minimum Bactericidal Concentration
  • Susceptibility Testing, Bactericidal Levels
  • Susceptibility Testing, MBC
  • Antibiotic Synergy Studies
Reference Laboratory
Mayo Wild 83 (ZW83) (Focus)
Special Testing
Specimen Requirements
Collection Instructions

Bacteria should be in pure culture, actively growing, placed in a proper mailing container (agar plates are not acceptable), and labeled as an etiologic agent. Keep at room temperature. If culture was done by MLabs, contact the MLabs Client Services Center within 7 days of initial culture date to request that the patient's isolate be saved for MBC testing. Indicate organism identification, antibiotic(s) to be tested, specimen source, and collection date/time.

Additional Information

Test sent to Mayo Medical Laboratories; performed by Focus Diagnostics.

CPT Code
87186, 87187
NY State Approved