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18th September 2017  Content supplied by: IDEXX Laboratories Inc

New Simple, Accurate Culture Testing Method for L. pneumophila in Water

IDEXX have introduced Legiolert™, a new culture testing method that enables building owners and facility managers to simplify water testing and reduce the risk posed by Legionnaires’ disease. Legiolert is a highly sensitive method for the confirmed detection of Legionella pneumophila (L. pneumophila), in water for use across Europe, the Middle East and Africa and delivers results to decision makers up to seven days faster than traditional testing methods.

Launched in 2016 in North America, Legiolert improves public health response times by accurately and sensitively quantifying L. pneumophila in water, providing a confirmed result in 7 days, versus up to 14 days with traditional culture methods. The new test does not require laborious colony counting or confirmation steps which reduce the need for training and the risk of interpretation errors and frees up time for laboratory staff.

Leading water microbiology consultant David Sartory recently concluded that the IDEXX Legiolert™/Quanti-Tray® test is superior to the standard method for quantifying L. pneumophila. His assessment was part of a peer reviewed study, “Evaluation of a most probable number method for the enumeration of Legionella pneumophila from potable and related water samples,” published in the April 2017 issue of Letters in Applied Microbiology.

“IDEXX Water is the global leader in water microbiology. With Legiolert, we continue our commitment to innovation in diagnostic technologies to improve the safety and quality of water worldwide,” commented Andrew Headland, Senior Business Manager for IDEXX Water. He added, “Legiolert is so much more sensitive and accurate than current culture methods. Combined with the fact that the product is extremely easy to use and requires minimal training, we expect to see an increase in on-site testing for Legionella pneumophila as well as wide-scale adoption in laboratories.”

The Legiolert test is based on a bacterial enzyme detection technology that signals the presence of L. pneumophila through utilisation of a substrate present in the Legiolert reagent. L. pneumophila cells grow rapidly and reproduce using the rich supply of amino acids, vitamins and other nutrients present in the Legiolert reagent. Actively growing strains of L. pneumophila use the added substrate to produce a brown colour indicator.

For more information on IDEXX Water’s Legiolert test and water safety testing, please visit: www.idexx.co.uk/water/products/legiolert.html

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Date Published: 18th September 2017

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