CLSI Susceptibility Testing Subcommittees and Resources
Advancing the Field of Microbiology with Timely AST Standards
Find the latest news and updates from our microbiology standards committees.
About the Susceptibility Testing Subcommittees
Subcommittees are responsible for two or more related documents in a topic area. They write draft documents, evaluate and respond to comments on content throughout the document development process, conduct scheduled document reviews, and may be responsible for continual revision of certain documents.
CLSI has established subcommittees in the following areas:
Antimicrobial Susceptibility Testing (AST) Subcommittee
The AST Subcommittee provides useful information to laboratories, enabling them to advise clinicians in the selection of appropriate antimicrobial therapy.
Antifungal Susceptibility Testing Subcommittee
The Antifungal Subcommittee collaborates to develop standards and guidelines that promote accurate antifungal susceptibility testing and appropriate reporting.
Veterinary Antimicrobial Susceptibility Testing (VAST)
The VAST Subcommittee collaborates to develop standards and guidelines that promote accurate antimicrobial susceptibility testing and appropriate reporting.
Susceptibility Testing Resources
View Meeting Files and Resources
Meeting Presentation Minutes
- AST Meeting Minutes
- Antifungal Meeting Minutes
- VAST Meeting Minutes
- New Attendee Orientation (YouTube Video)
- New Attendee Orientation (Slides Only)
M100 Resources
Other Tools Used for Decisions
Rationale Documents Resources:
- CLSI Rationale Documents Dashboard
- FDA-Recognized Antimicrobial Susceptibility Test Interpretive (STIC) Criteria
- FDA Notice of Updates to Standards Recognition
Note: This will open the FDA website to access FDA’s rationales for breakpoint decisions.
View Educational Resources
AST News Updates
Webinars
- Upcoming Microbiology Webinars
- Archived Microbiology Webinars
- On-Demand CLSI-SIDP ACCP Annual Webinar
Note: This will open ProCE's website.
Breakpoint Updating Resources
- 2023 Breakpoint Implementation Toolkit (BIT)
- On-Demand Education Session: Updating Breakpoints—Challenges and Solutions for Various Stakeholders
- Slides Only: Updating Breakpoints—Challenges and Solutions for Various Stakeholders
Other
- Statistician Summary for Alternative 5X3 QC Testing
- CLSI and AST
- M23 Disk Content Submission Inquiry
- Joint ASM-CLSI-CAP Individualized Quality Control Plan (IQCP)
Note: This will open the ASM website.
Access Our Free Microbiology Standards Resources
CLSI M100 and M27M44S Free
Performance Standards for Antimicrobial & Antifungal Susceptibility Testing
Access read-only web versions of M100 and M27M44S to quickly reference the most trusted AST and antifungal breakpoints. Available online as a convenient companion to our M100 and M27M44S documents.
CLSI AST Rationale Documents (Free)
AST Rationale Documents (Free)
Providing the scientific reasons behind breakpoint decisions.
CLSI M23
Development of In Vitro Susceptibility Testing Criteria and Quality Control Parameters, 5th Edition
This guideline discusses the necessary and recommended data for selecting appropriate breakpoints and quality control ranges for antimicrobial agents.
CLSI VET01S Free
Performance Standards for Antimicrobial Disk and Dilution Susceptibility Tests for Bacteria Isolated From Animals, 5th Edition
This document includes updated tables for the Clinical and Laboratory Standards Institute veterinary antimicrobial susceptibility testing standard VET01.
CLSI Using M100-Ed32
Using M100
Improve your lab's antimicrobial susceptibility testing (AST) by using this self-paced, online learning program. This interactive program will teach you how to navigate the many tables found in CLSI's document M100—Performance Standards for Antimicrobial Susceptibility Testing, 32nd Edition.
Volunteering With CLSI
Hear directly from our volunteers about their experience volunteering on CLSI AST Subcommittees.
Meetings
Future Meetings
June 3-6, 2023
St. Louis, Missouri
Recent Meetings
January 19–24, 2023
Orlando, Florida
June 23-28, 2022
Rosemont (Chicago), Illinois
Staff Liaisons
AST Staff Liaison | Emily Gomez, MS, MLS(ASCP)MB
Antifungal Staff Liaison | Christine Lam, MLS(ASCP)
VAST Staff Liaison | Lori T. Selden, MS, MLS(ASCP)
Shop the Latest
CLSI On-Demand CLSI and CAP 2021 Webinar
Ensuring Quality Beyond the Test: Reporting Antimicrobial Susceptibility Results
Thursday, January 21, 2021 | 1:00–2:00 PM Eastern (US) Time
CLSI Using M100-Ed32
Using M100: Performance Standards for Antimicrobial Susceptibility Testing
Improve your lab's antimicrobial susceptibility testing (AST) by using this self-paced, online learning program. This interactive program will teach you how to navigate the many tables found in CLSI's document M100—Performance Standards for Antimicrobial Susceptibility Testing, 32nd Edition.