Listeria Environmental Lab Testing for Food Manufacturers

Ensure food safety and regulatory compliance with fast, accurate, ISO 17025-accredited testing.

Protect your brand, your customers, and your regulatory standing with reliable Listeria environmental monitoring. At Food and Ag Lab, we help FDA and USDA food facilities, processors, and packagers detect and control Listeria in their production environments.

Whether you are responding to an FDA/USDA hold, validating sanitation protocols, or maintaining a routine Environmental Monitoring Program (EMP), our accredited laboratory delivers the timely, defensible data you need.

 Waiting a week or more for lab results puts your production schedule at risk. We offer industry-leading speed without sacrificing scientific rigor.

• Blazing-Fast Turnaround: Standard 2-day results to keep your operations moving. (Compared to the 7-14 day industry average).
• Accredited & Validated: ISO 17025 accredited laboratory utilizing AOAC-validated protocols (AOAC PTM 020401) for Listeria spp. and Listeria monocytogenes. (AOAC PTM 011805)
• Complete Sampling Logistics: We provide pre-packaged, labeled environmental sponge and swab kits shipped directly to your facility. Order Supplies 
• Secure Chain of Custody: Digital tracking, overnight temperature-controlled shipping options, and local courier services in the Austin, TX area.

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 We offer a streamlined, science-backed approach customized to your facility's specific risk profile.

• Sample Types: Environmental sponges, swabs, (received refrigerated).
• Methodology: AOAC-validated methodologies (AOAC PTM 020401).
• Sampling Zones: Comprehensive testing for Zones 1 through 4 (food contact surfaces, equipment, drains, and facility floors/walls).
• Reporting: Clear, actionable, and auditor-ready reports to demonstrate due diligence for FSMA compliance and GFSI certification.

  We provide environmental monitoring for a wide range of FDA and USDA-regulated food sectors, including:

• Ready-to-Eat (RTE) Meat & Poultry Processors
• Dairy & Cheese Facilities
• Perishable Produce & Nut Operations
• Frozen Food & Meal Manufacturers
• Commercial Kitchens, Commissaries & Bakeries
• Co-packers & Sauce Makers
• Bakeries
• Tortilla makers

Listeria is a resilient bacterium that thrives in cool, damp environments, making it a persistent threat in ready-to-eat (RTE) food production. Undetected contamination can lead to costly recalls and serious public health risks.

Bruce Tompkin—a foundational voice in Listeria control—famously reframed how the industry should interpret environmental positives:

"Finding Listeria in the environment should be viewed not as a failure, but as evidence that the monitoring program is working."

A positive swab in Zone 2, 3, or 4 isn't a crisis; it is proof that your program is actively detecting risk before it reaches food contact surfaces (Zone 1). Regular environmental testing is a critical component of continuous improvement, FSMA compliance, and sanitation validation.

From small-batch producers to national brands, we make it easy to integrate Listeria testing into your routine operations.

Call us today at (512) 730-0160 or [Contact Us Online] to get started.

• Post-lethality Exposed Ready-to-Eat Meat and Poultry Products (usda.gov) 
•  Guidance for Industry (fda.gov) 
•  pem_book.pdf (almonds.com) 
•  Environmental Listeria Monitoring: Seek and Destroy Pathogens (food-safety.com) 
•  https://www.pma.com/~/media/pma-files/food-safety/listeria/lm-control-workshop/miami-feb-2018/wiedmann-environmental-monitoring-25-jan-2018.pdf?la=enNo 
•  environmental-monitoring-handbook Neogen  
• Best Practices Guidance for Controlling Listeria monocytogenes in Retail Delicatessens
• Control of Listeria monocytogenes in the Food-Processing Environment - Bruce Tompkin JFP