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Antimicrobial Susceptibility Testing

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Requisition Forms

Reference Details

Description:

Antimicrobial susceptibility testing of Gram negative organisms.

Test Category:
Susceptibility Testing
Pathogen:
Gram negative organisms
Illnesses and Diseases:
  • Pneumonia
  • Bacteraemia
  • Meningitis
  • Urinary tract infection
  • Wound
Specimen:

Pure culture.

Collection Method:

N/A

Specimen Processing, Storage and Shipping:

Send cultures as growth on culture medium or in transport medium. Culture vessel should be leak-proof or sealed appropriately.

Transportation of Dangerous Goods:

Shipping of specimens shall be done by a TDG certified individual in accordance with TDG regulations. For additional information regarding classification of specimens for the purposes of shipping, consult either Part 2 Appendix 3 of the TDG Regulations or section 3.6.2 of the IATA Dangerous Goods Regulations as applicable.

Patient Criteria:

N/A

Accompanying Documentation:

Completed Antimicrobial Resistance and Nosocomial Infections Requisition.

Comments:

Gram negative organisms may include but are not limited to most Enterobacterales, Acinetobacter sp., Pseudomonas sp., and Stenotrophomonas sp. Please consult with lab prior to submitting rarely tested organisms or those that require specialized growth conditions.

Methods and Interpretation of Results:

Susceptibility testing is performed at the discretion of the lab by Etest, disc diffusion, agar dilution, or broth microdilution. Results are interpreted according to breakpoints published by CLSI, FDA, or EuCAST.

 

 

Turnaround Time:

8 calendar days.

Contact:
Phone #: (204) 789-5000
Fax: (204) 789-5020
References:
  1. CLSI. Performance Standards for Antimicrobial Susceptibility Testing, 33rd informational supplement, M100-S27. 2023. Wayne, PA: Clinical and Laboratory Standards Institute.
  2. The European Committee on Antimicrobial Susceptibility Testing (EuCAST). Breakpoint tables for interpretation of MICs and zone diameters. Version 13, 2023. http//www.eucast.org
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