CLSI M31 A3 : 3ED 2008
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
PERFORMANCE STANDARDS FOR ANTIMICROBIAL DISK AND DILUTION SUSCEPTIBILITY TESTS FOR BACTERIA ISOLATED FROM ANIMALS
07-01-2013
01-12-2013
Abstract
Committee Membership
Foreword
1 Scope
2 Introduction
3 Definitions
4 Indications for Performing Susceptibility Testing
4.1 Limitations of Disk Diffusion and Dilution Methods
5 Selection of Antimicrobial Agents
5.1 Nonproprietary Names
5.2 Selection Guidelines
5.3 Antimicrobial Classes
5.4 Guidelines for Routine Reporting
5.5 Guidelines for Selective Reporting
5.6 Interpretive Categories
6 Disk Diffusion Susceptibility Tests
6.1 Equivalent MIC Breakpoints
6.2 Methodologies
6.3 Streptococcus spp.
6.4 Pasteurella multocida and Mannheimia haemolytica
6.5 Other Organisms
6.6 Campylobacter jejuni and Related Species
6.7 Anaerobic Organisms
6.8 Detection of Resistant Staphylococci
6.9 Detection of Resistant Enterococci
7 Broth and Agar Dilution Susceptibility Testing
7.1 Indications for Performing Broth and Agar Dilution
Susceptibility Tests
8 Antimicrobial Agents
8.1 Source
8.2 Weighing Antimicrobial Agent Powders
8.3 Preparing Stock Solutions
8.4 Number of Concentrations Tested
9 Agar Dilution Procedure
9.1 Reagents and Materials
9.2 Agar Dilution Testing of C. jejuni
10 Broth Dilution Procedure
10.1 Broth Medium
10.2 Cation Adjustments
10.3 Preparing and Storing Diluted Antimicrobial Agents
10.4 Standardizing Inoculum for Broth Dilution Testing
10.5 Inoculating Broth
10.6 Incubation
10.7 Interpreting Results
11 Broth Dilution Susceptibility Testing of Fastidious
Organisms
11.1 P. multocida and M. haemolytica
11.2 Broth Microdilution Testing of H. somni and
A. pleuropneumoniae
11.3 Broth Microdilution Testing of Campylobacter spp.
11.4 Streptococci and Listeria spp.
11.5 Staphylococcus hyicus
12 Detection of Resistant Staphylococci
12.1 Methicillin/Oxacillin Resistance
12.2 Oxacillin Screening Plates
12.3 Reduced Susceptibility to Vancomycin
13 Detection of Resistant Enterococci
13.1 Penicillin-Ampicillin Resistance
13.2 Vancomycin Resistance
13.3 High-Level Aminoglycoside Resistance
14 QC Guidelines
14.1 Purpose
14.2 QC Responsibilities
14.3 Suggested Reference Strains
14.4 Disk Diffusion Tests
14.5 Frequency of QC Testing (also refer to Appendix B)
14.6 Dilution Susceptibility Tests
14.7 Daily Testing
14.8 Weekly Testing
14.9 Corrective Action
15 Specific Antimicrobial Resistance Tests
15.1 Purpose
15.2 beta-Lactamase Tests
15.3 Selecting a beta-Lactamase Test
15.4 Detection of Extended-Spectrum,
beta-Lactamase-Producing Enterobacteriaceae
16 Cumulative Antimicrobial Susceptibility Profile
References
Appendix A. Antimicrobial Susceptibility QC Record
Appendix B1. Disk Diffusion Daily QC Testing Protocol
Appendix B2. Disk Diffusion Weekly QC Testing Protocol
Appendix C1. Aerobic Dilution Daily QC Testing Protocol
Appendix C2. Aerobic Dilution Weekly QC Testing Protocol
Appendix D1. Disk Diffusion QC Troubleshooting Guide
Appendix D2. MIC QC Troubleshooting Guide
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