BD CLED Agar (Cystine-Lactose-Electrolyte-Deficient Agar) is a differential culture medium for use in isolating and enumerating bacteria from urine. It supports. In the laboratory CLED Medium provides a valuable non-inhibitory diagnostic agar for plate culture of urinary organisms. It is electrolyte deficient to prevent the . CLED AGAR (CYSTINE LACTOSE ELECTROLYTE DEFICIENT). CAT Nº: For the inhibition of Proteus swarming in the cultivation of Gram-positive and.

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Mix well before pouring. Non-lactose fermenting strains – blue colonies Klebsiella species extremely mucoid colonies varying in colour from yellow agat whitish-blue Proteus species translucent blue colonies usually smaller than Escherichia coli Salmonella species flat blue colonies Pseudomonas aeruginosa green colonies with typical matt surface and rough periphery Enterococcus faecalis yellow colonies about 0.

It contains cystine and lactose and is electrolyte -deficient; the latter trait prevents the agat of Proteus species. Phenylalanine and Tryptophan are also included as indicators of Tryptophan Deaminase activity producing brown colonies of Proteus spp.

File:Lactose non lactose fermenters on CLED – Wikipedia

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Pale green coloured, free-flowing powder Prepared medium: This file contains additional information, agra added from the digital camera or scanner used to create or digitize it. This is one such medium and has been developed with the aim of simplifying the differentiation and presumptive identification of the main organisms usually found in Urinary Tract Xled. The medium supports the growth of all urinary potential pathogens giving good colonial differentiation and clear diagnostic characteristics.


This medium is recommended for urinary bacteriology, supporting the growth of all urinary pathogens and giving good colonial differentiations and clear diagnostic characteristics.

Cystine–lactose–electrolyte-deficient agar

Other products used in the isolation of Urinary pathogens:. A variant of this technique has been described by Guttman and Naylor 4 who employed media-coated slides. Articles needing additional references from October All articles needing additional references. The lack of electrolytes inhibits the spreading of Proteus spp. Commons is a freely licensed media file repository. CLED agar cystine—lactose—electrolyte-deficient agar or medium is a valuable non-inhibitory growth medium used in the isolation and differentiation of urinary microbes.

From Wikipedia, the free encyclopedia. Views Read Edit View history. Permission Reusing this file. If the file has been modified from its original state, some details may not fully reflect the modified file.

The medium has been used successfully in the Clsd Transport Medium technique Mackey and Sandys 1,3. I grant anyone the right to use this work for any purposewithout any conditions, unless clef conditions are required by law. As required by organisms. October Learn how and when to remove this template agag.

Views Read View on Commons. Two chromogens are present in the medium, one allows the detection of enterococci giving rise to blue colonies whilst the second results in purple colonies of E.


It is electrolyte deficient to prevent the swarming of Proteus species. In the laboratory CLED Medium provides a valuable non-inhibitory diagnostic agar for plate culture of urinary organisms.

This is a file from the Wikimedia Commons. CM Recommended for diagnostic urinary bacteriology.

Cystine–lactose–electrolyte-deficient agar – Wikipedia

Firm Gel Colour Side 1: In some countries this may not be legally possible; if so: For full details, the original papers should be consulted. CLED cysteine lactose electrolyte deficient agar showing both lactose fermenting and non-fermenting colonies.

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This page was last edited on 24 Decemberat Bromothymol blue is the indicator used in the agar, it changes to yellow in case of acid production during fermentation of lactose or changes to deep blue in case of alkalinization. Unsourced material may be challenged and removed.

These techniques overcome false bacteriological results associated with delay in the transport of the specimens of urine to the laboratory and permit a clinically accurate routine differential viable count. I, the copyright holder of this work, release this work into the public domain. Please help improve this article by adding citations to reliable sources.