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Listeria genus (ELFA) Test

  • For 25g test
    39 per analysisFor 125g (Composite) test
    46 per analysis
  • |
  • 7-9 Business Days
  • |
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Listeria genus (ELFA) Test

Technical data sheet


Method description

VIDAS UP Listeria is an enzyme-linked fluorescent immunoassay for the detection of Listeria using the ELFA technique (Enzyme Linked Fluorescent Assay).
Confirmation services also available.


BioMerieux VIDAS

Method reference

AOAC 2013.10

Reportable unit

For 25g test
Environmental: positive or negative/swab
In Food Products: positive or negative/sample size (25g)

For 125g (Composite) test
Environmental: positive or negative/swab
In Food Products: positive or negative/sample size (125g)

Sample size requirements

Environmental: 1 swab/test
In Food Products: minimum of 500 grams

Additional information

Based on a new phage recombinant protein technology, VIDAS Up Listeriais an automated qualitative test for the detection of Listeria in human food products and production environmental samples. Note that a percentage of all raw commodities may contain a low level of these organisms.

PCR and ELFA Method Comparison – Which method should I choose?

Both test methods will provide accurate results. See the table below for a high-level test comparison.

Assay What does this test measure?  Test Advantage
Molecular Assay Detects pathogens using target sections of DNA that are specific to that pathogen, making the assay more sensitive than the VIDAS. Fewer false negatives and fewer false positives.
Immunoassay Detects pathogens by having proteins bind to pathogen-specific receptors. More cost effective.
*Prices and offerings are subject to change without notice.

Common Listeria genus (ELFA) Test Testing Questions

While our sales and customer service team are happy to answer general testing questions, consultations typically start at a rate of $250 per 30 minutes regarding the interpretation of reported test results or questions about our test methods. We cannot consult on regulations, tolerance limits, or claims.

We make every effort to keep our methods and detection limits up to date according to the latest standards and qualifications. If you have any questions regarding the limit of detection/quantification or method references, please contact our Customer Service team at 1-800-245-5615.

Our standard turnaround time is 10 business days for most assays. There are some assays that require a longer turnaround time. We also offer a RUSH service that is half the time of the standard turnaround time of the assay at double the cost of the assay. A few assays that we provide cannot be rushed due to the nature of the test. Please check the specific assay you are interested in regarding the ability to RUSH the turnaround time.

Medallion Labs, a division of General Mills, offers multiple areas of expertise for analytical testing and product evaluation for the food and ingredient industry. Our areas of expertise include Chemical Analysis, Nutritional Analysis, Food Safety, Shelf Life Studies, Microbiology, Specialty Fibers, Physical Testing, Allergen Testing, as well as Product Evaluation (which includes Product Performance and Sensory Evaluation) and Technical Consulting/Method Development. Our methods are developed for the testing of food products and ingredients.

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Medallion Labs

A food testing program designed with mid-market and enterprise food and ingredient manufacturers in mind.