Salmonella Testing
& Detection

PJLA-accredited Salmonella Testing using AOAC-validated PCR, lateral flow with cultural confirmation, and 3M™ Molecular Detection Assay for food, environmental, and irrigation water samples.

Focus
Salmonella spp. Detection
Methods
PCR, Lateral Flow & 3M MDA
Accreditation
ISO/IEC 17025:2017 | FDA LAAF

Precision Salmonella Testing & Food Safety

In the food industry, reliable Salmonella Testing is a non-negotiable aspect of Quality Assurance and regulatory compliance. Salmonella is a zero-tolerance foodborne pathogen. Whether you are producing Ready-to-Eat (RTE) meals, processing raw ingredients, or managing an environmental monitoring program, the risk of contamination must be managed with precision. AGT Labs provides rigorous microbiological analysis under ISO/IEC 17025:2017 and FDA LAAF accreditation to meet FSMA and GFSI requirements.

Objectives of Salmonella Testing

Key goals for a comprehensive food safety plan.

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Zero Tolerance Compliance

Ensure finished RTE products satisfy zero-tolerance policies requiring negative Salmonella spp. results.

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Ingredient Verification

Screen incoming raw materials such as spices, flour, and eggs to prevent introduction of pathogens.

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HACCP Validation

Validate that your thermal kill steps (cooking/pasteurization) are effective by testing post-process samples.

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Environmental Monitoring

Sponge and swab analysis for Zone 2 and Zone 3 areas to detect harborage niches in drains, floors, and equipment.

Accredited Salmonella Testing Methods

We employ a multi-tiered approach, offering rapid molecular screening for speed and lateral flow with cultural confirmation for regulatory defensibility. All methods are listed on our PJLA scope under ISO/IEC 17025:2017 and FDA LAAF.

Rapid PCR detection of Salmonella spp.
High-Speed Molecular Screening Method

Rapid Salmonella PCR

Polymerase Chain Reaction (PCR) technology amplifies specific DNA fragments unique to the Salmonella genus. The process begins with an enrichment phase to revive injured cells in the food matrix, followed by lysis to release DNA. The thermal cycler then targets and replicates Salmonella-specific genetic markers for high-sensitivity detection in food products, environmental sponges, swabs, and water.

Standard:

SOP 021 | AOAC PTM # 010803 (FDA LAAF Accredited).

Advantages:

This method offers high sensitivity and specificity with a rapid turnaround time. Negative results are typically available within 24 to 48 hours, allowing for the faster release of perishable food products.

Cultural confirmation on Chrom ID selective agar
Lateral Flow with Cultural Confirmation

Lateral Flow & Chrom ID Confirmation

This accredited method combines a rapid lateral flow immunoassay with cultural confirmation on selective chromogenic media. Samples undergo pre-enrichment to recover stressed cells, followed by selective enrichment, lateral flow screening, and confirmation on Chrom ID or Hardy Chrom agar. This pathway is validated for environmental sponges, swabs, food products, and water matrices.

Standard:

SOP 020 | AOAC PTM # 080601 (FDA LAAF Accredited).

Advantages:

Lateral flow gives a fast presumptive read while the cultural confirmation step isolates the living organism on selective agar — essential for regulatory disputes, root-cause investigations, and defensible Certificates of Analysis.

Real-time molecular detection assay platform
Validated Molecular Detection Assay

3M™ Molecular Detection Assay (MDA)

A real-time isothermal amplification platform validated for the detection of Salmonella in food, environmental samples, and irrigation water. After enrichment, target nucleic acids are amplified and detected by bioluminescence, providing rapid, definitive presumptive results suitable for high-volume production environments and Produce Safety Rule compliance for irrigation water.

Standard:

AOAC 2016.01 | GENE-UP® Salmonella 2 (AOAC 2020.02) available as alternate validated platform.

Advantages:

Provides validated detection for irrigation water and complex food matrices, with quantification (AOAC PTM # 082104) available when an enumeration result is required.

Matrices Validated for Salmonella Testing

Our PJLA scope covers food products, environmental sponges and swabs, water, irrigation water, and pet food.

Raw poultry sample preparation

Raw Poultry & Meat

Food product matrix screened by PCR and lateral flow with cultural confirmation.
Shell eggs and liquid egg samples

Eggs & Egg Products

Shell eggs and liquid egg products analyzed under FDA LAAF accredited methods.
Low moisture foods including nuts and powders

Low Moisture Foods

Nuts, powders, and dry blends analyzed via AOAC PTM # 010803 PCR after extended enrichment.
Chocolate and cocoa ingredients

Chocolate & Cocoa

Validated workflows for chocolate, cocoa, and confectionery ingredients.
Fresh produce and irrigation water samples

Produce & Irrigation Water

Leafy greens, produce rinses, and irrigation water analyzed via AOAC 2016.01 (3M MDA).
Spices, herbs, and dry goods

Spices, Environmental Swabs & Pet Food

Spices and herbs are a leading cause of FDA detention; environmental sponges, swabs, and pet food are also covered on our scope.

Why Choose AGT Food Labs?

We combine technical rigor with the agility of a dedicated safety partner.

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Accredited Excellence

ISO/IEC 17025:2017 Accredited by PJLA & FDA LAAF Recognized. Your results are legally defensible.

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Rapid Turnaround

We understand that shelf life is critical. Our lab offers expedited workflows to minimize inventory hold times.

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Technical Support

In the event of a positive finding, our microbiologists provide guidance on root cause analysis and remediation strategies.

Common Questions About Salmonella Testing

Why is "Zero Tolerance" applied to Salmonella in RTE foods?
Salmonella is a severe pathogen with a low infectious dose. "Zero Tolerance" means that the detection of Salmonella in any amount (e.g., in a 25g sample) renders Ready-to-Eat (RTE) food adulterated and unfit for consumption, as no further kill step exists before eating.
What is the difference between rapid PCR and lateral flow with cultural confirmation?
Rapid PCR (AOAC PTM # 010803) detects specific DNA segments of Salmonella and provides results in 24-48 hours. The lateral flow with cultural confirmation pathway (AOAC PTM # 080601) uses Chrom ID or Hardy Chrom selective media to isolate the living organism, which is required for regulatory confirmation.
How much sample is needed?
Standard protocols typically require 25g to 375g of product per test, depending on the food category and regulatory requirements. We generally request sending at least 100g to ensure sufficient sample for initial screening and potential confirmation.
Should I test finished products or the environment?
Both are important. Environmental monitoring (swabbing drains, floors) proactively identifies contamination risks in your facility before they reach the product. Finished product testing verifies that your food safety controls were effective for that specific lot.
What happens if my sample tests presumptive positive?
If a PCR or lateral flow screen is presumptive positive, we proceed to cultural confirmation on Chrom ID or Hardy Chrom to verify the result. A confirmed positive in a finished product typically requires a recall or diversion. We provide technical support to help you investigate the root cause.

Prevent Salmonella Recalls

Validate your sanitation protocols with PJLA-accredited Salmonella Testing.

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