Antimicrobial susceptibility

Description of the test

Description:

Determination of the antibiotic susceptibility of Listeria using the E-test method. This is a quantitative method in which, on the surface of an agar plate containing a bacterial strain, a strip of agar is placed with a given concentration of antibiotic on one side and a given value in mg/L on the other. The MIC values (Minimum inhibitory concentration, mg/L) are shown on the strip.

Result:

The clinical category of anticoagulant susceptibility of a sample (susceptible — intermediate — resistant) is determined by the MIC values according to the most recent EUCAST criteria.

Results of the test

Suitability of Listeria monocytogenes for antibiotics.

Criteria for the use of this test in the framework of reference activities

Suitability of antibiotics for all Listeria monocytogenes strains (determined by the NRC) from patients who show symptoms of listeriosis (analysis included in the NRC Listeria surveillance programme).

Instructions for samples

• Type: Listeria on a transport body of another large medium.
• Minimal quantity: Not applicable

Instructions for transport

This product is designed for use at ambient temperatures and must be placed in a double-sealed, hermetically sealed container.

Unacceptable requests

Not applicable 

Turnaround time (and frequency of analysis)

• Turnaround time: 15 working days 
• Analysed days: Every weekday (Excluding: weekdays, long weekends and the period between Christmas and New Year).

Reporting of test results

The analysis report is written in the manner requested by the client.