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Listeria monocytogenes

Listeria monocytogenes Testing

Listeria is an organism that is ubiquitous in the environment. Unlike some other food related pathogens, it is not disseminated from animals. For high risk populations (the very old, the very young, pregnant and immunocompromised), a very little amount of Listeria in food can be highly dangerous. Listeria monocytogenes is the most pathogenic of the species.

L. monocytogenes has been associated with such foods as raw milk, supposedly pasteurized fluid milk, cheeses (particularly soft-ripened varieties), ice cream, raw vegetables, fermented raw meat sausages, raw and cooked poultry, raw meats (all types) and raw or smoked fish. Its ability to grow at temperatures as low as 3°C permits multiplication in refrigerated foods.

  • This method detects the Presence or Absence of the bacterium. A confirmation charge may be incurred in cases of Presumptive Positive screens. A 50g minimum sample is recommended. Environmental surface samples can also be analyzed. Listeria can be speciated upon request.
  • EMSL Test Code: F107
  • Sample retention time – 30 days, unless highly perishable

Visit our dedicated Food Testing website at www.FoodTestingLab.com.

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