Listeria Testing & Listeria Monocytogenes

Listeria monocytogenes is a bacterium that causes listeriosis, a serious infection usually caused by eating food contaminated with the bacterium. In the United States this is a large health problem in many manufacturing facilities as the disease primarily affects people with weakened immune systems including the elderly, pregnant women, children, and newborns. The CDC estimated that “approximately 1600 illnesses and 260 deaths due to listeriosis occur annually in the United States.” Vigilant testing allows facility managers to correct problems quickly, thereby mitigating risk to building occupants and the public.

The cost of litigation and health care associated with infection is orders of magnitude greater than preventive testing. We are experts in testing. Dr. Sobek, our founder, is a microbial contamination expert and experienced in Listeria bacteria investigations. Accordingly, our clients receive the highest quality service backed by leading edge science.


Listeria on Modified Oxford Agar


Listeria on Hardychrom Listeria Agar

For Listeria testing or inspection information, contact Assured Bio today.

Fill out the form at the bottom of this page or call toll-free at 1-866-547-1727

Culture Analysis

Our lab technicians are trained professionals that utilize innovative technology to analyze samples in an accurate and timely manner. Assured Bio Labs is accredited by the AIHA for culturing. Our lab follows the FDA Bacteriological Analytical Manual’s protocol for the analysis of Listeria.

Turnaround Time: 7-14 Days (For additional cost, samples can be expedited)

DNA Analysis

Each sample that is processed by Quantitative Polymerase Chain Reaction (qPCR) utilizes two assays for the identification of all Listeria species and Listeria monocytogenes bacteria in environmental samples. DNA analysis is 99.9% accurate. Our lab follows the FDA Bacteriological Analytical Manual’s protocol for the analysis of Listeria.

Turnaround Time: 2-3 Days (For additional cost, samples can be expedited)

Inspection Services

We offer inspection services for any company that requires the collection and processing of samples for Listeria. Our highly trained professional inspectors, with instruction from our technical director, Dr. Joshua Birkebak, will do all the sampling necessary to test your facility for Listeria. For individual pricing quotes for our inspection services please contact, fill out the form above or call us at (865) 813-1700.

More Information:

Economic Burden of Listeria According to an USDA Report:

Listeria monocytogenes costs $2,834,444,202 annually in the United States (2013)

Listeria Surveillance from the CDC

BAM Methods Used from the FDA

American Industrial Hygiene Association Accredited (AIHA Lab ID# 183867)