Veriflow Listeria Monocytogenes

Protect your brand with the most robust detection tools in the food industry

Veriflow® Listeria monocytogenes provides robust specificity and sensitivity across an extensive variety of environmental surfaces and multiple food and beverage matrices, without complex and time consuming sample preparation.

Veriflow technology is proven to provide rapid, accurate, actionable detection of pathogen and spoilage indicators – with no compromises on ease of use and affordability. The technology is easily deployed onsite allowing you to identify microbial risks, take corrective action, and prevent large-scale contamination.

The Veriflow system is comprised of a small customized thermocycler, pre-aliquoted PCR reagent tubes, and proprietary buffers and hand-held cassette. Test results are garnered with less than 15 minutes of end user hands-on time per sample.

Unmatched specificity

AOAC Performance Testing MethodsSM Program was utilized for validation and verification of assay performance, with no significant difference in performance compared to corresponding culture-based reference methods.

  • Broad inclusivity of 50 Listeria monocytogenes serotypes with 100% detection rate
  • Correctly excludes all applicable strains

Unrivaled sensitivity

The robust Veriflow platform performs at the highest levels of accuracy even in the most challenging matrices, with vastly simplified sample preparation.

  • Target amplification of a conserved gene market for Listeria monocytogenes
  • Successfully validated in Ready-to-Eat foods, milk and dairy product, nutraceuticals, confectionary goods and environmental surfaces
  • Reliable results in even the most challenging matrices

Unsurpassed ease of use

The Veriflow system is ideally suited for onsite implementation, with a modest capital investment and affordable per test cost.

  • Results in 24 hours versus 3-4 days with traditional methods
  • Streamlines your quality management processes
  • Easily implemented onsite with existing resources
  • Eliminates the need for proprietary media, two-step enrichment, and DNA extraction sample preparation
 

ENRICH

After 18-24 hours enrichment, transfer 500 µl sample to provided 1.5 ml sampling tube. Heat sample for 10 minutes, then allow to cool to room temperature.

enrich

AMPLIFY

Transfer 5µl of heat inactivated sample into provided PCR reagent tube. Place tube into Veriflow Thermocycler and start 90 minute amplification cycle with one touch.

amplify

DETECT

Remove PCR reagent tube from thermocycler. Dispense contents of the tube onto test cassette window. Wait 3 minutes and retract test cassette switch to reveal test results. One line indicates a negative result, two lines indicate a positive result.

detect
 

Specificity

AssayStrainsResults
Inclusivity50 Listeria monocytogenes Serotypes100% Detection RateCorrectly identified all strains tested
Exclusivity39 Non-Listeria species100% Exclusion RateCorrectly excluded all strains tested

Sensitivity

MatrixDemonstrated equivalence to USDA MLGExternal ValidationClient References
Stainless SteelYESYESYES
Sealed ConcreteYESYESYES
Ceramic TileYESYESYES
PlasticYESYESYES
Hot DogsYESYESYES
Deli TurkeyYESYESYES
Whey PowderYESYESYES
2% Pasteurized MilkYESYESYES
Chocolate Chip CookiesYESYESYES
Pea ProteinYESYESYES
Pea FiberYESYESYES
Rice ProteinYESYESYES
FructoseYESYESYES
ChiaYESYESYES
Vitamin Mineral Pre-MixYESYESYES
CocoaYESYESYES

Veriflow STEC Technical Specifications

Specificity50 Listeria monocytogenes serotypes
Time to Results24 hours enrichment + 2 hour assay time
Matrix CompatibilityWide variety of surfaces and matrices
SensitivityZero tolerance detection
Assay FormatQualitative
Test Stability1 year expiration with proper storage
EnrichmentSingle step enrichment in Invisible Sentinel Listeria Enrichment Broth (ISLB) or mLEB
No selective supplements required
Sample PreparationMolecular platform that eliminates need for DNA extraction or purification
WorkflowSimple 3 step procedure
Results InterpretationImmediate visualization on hand-held cassette - no complex data analysis