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{{Infobox company
| name = LLuCS
| logo =
| type = [[Private company|Private]] ([[Société à responsabilité limitée|S.à r.l.]])
| industry = Laboratory testing and analysis ([[NACE]] 71.202)
| foundation = {{Start date and age|1993}}
| founder =
| location_city = [[Esch-sur-Alzette]]
| location_country = [[Luxembourg]]
| area_served = Luxembourg and the Greater Region
| key_people = Cyrille Blettner (Managing Director & Technical Director)
| products = Microbiological and sanitary analyses, air quality kits
| services = Food analysis, water analysis, hygiene analysis, indoor air quality testing
| website = {{URL|www.llucs.lu}}
}}

'''LLuCS''' (''Laboratoire Luxembourgeois de Contrôle Sanitaire'', English: ''Luxembourg Laboratory for Health Control'') is a Luxembourg-based private analytical laboratory founded in 1993 and located at the [[House of BioHealth]] in [[Esch-sur-Alzette]].<ref name="llucs_lab">[https://www.llucs.lu/laboratoire/ About the laboratory – llucs.lu]</ref> It is accredited by '''[[OLAS]]''' (Organisme Luxembourgeois d'Accréditation et de Surveillance, the Luxembourg Accreditation and Surveillance Organisation) in accordance with the international standard '''[[ISO/IEC 17025]]:2017''', and provides analytical services across four main sectors: food safety, water quality, hygiene, and indoor air quality.<ref name="infogreen">[https://www.infogreen.lu/laboratoire-luxembourgeois-de-controle-sanitaire-llucs.html LLuCS profile – infogreen.lu]</ref>

==History==

===Foundation and early years (1993–2018)===

The laboratory was established in '''1993''' under the name '''HTA''' (''Hygiene in Food Technology''), initially focusing on food hygiene analyses.<ref name="hobh">[https://hobh.lu/focus-on-llucs/ Focus on: LLuCS – House of BioHealth]</ref> Over the years, it broadened its analytical expertise to cover water, hygiene surfaces, and environmental analyses, establishing itself as a trusted partner for Luxembourg-based businesses and institutions.

In '''December 2017''', the laboratory relocated to the '''[[House of BioHealth]]''' (HoBH), a modern campus dedicated to health innovation in Esch-sur-Alzette. The move provided significantly expanded laboratory space, improved storage facilities, and the opportunity to develop synergies with other health sector actors on the same site.<ref name="hobh" />

===Transition to LLuCS (2019)===

The year '''2019''' marked a turning point for the company: the laboratory underwent major changes in both its shareholder structure and its name, transitioning from HTA to '''LLuCS''' (Luxembourg Laboratory for Health Control).<ref name="hobh" /> That same year, LLuCS obtained its '''ISO/IEC 17025 accreditation''' from [[OLAS]], a key milestone formally recognising the quality, technical competence, and reliability of its testing processes.<ref name="careers">[https://www.llucs.lu/carriere/candidature-spontanee-rejoignez-llucs/ Spontaneous application – llucs.lu]</ref>

===Recent developments===

In '''2022''', LLuCS joined the '''Paperjam + Delano Business Club''', Luxembourg's leading professional business network, with the aim of strengthening its visibility and expanding its network of contacts among Luxembourg's economic decision-makers.<ref name="paperjam">[https://paperjam.lu/guide/organisation/01814742466/laboratoire-luxembourgeois-controle-sanitaire-llucs LLuCS entry – Paperjam Bible]</ref>

In '''2025''', Julien Blaise, Business Developer at LLuCS, was among the co-founders of '''LIAVA''' (''Luxembourg Indoor Air and Ventilation Association''), an ASBL (non-profit association) created to bring together Luxembourg professionals specialising in indoor air quality, with a view to contributing to regulatory frameworks and raising public awareness.<ref name="liava">[https://www.infogreen.lu/llucs-28649.html LLuCS and LIAVA – infogreen.lu (January 2026)]</ref>

==Location==

LLuCS is headquartered at '''27, rue Henri Koch, L-4354 Esch-sur-Alzette''', within the [[House of BioHealth]] (HoBH) campus. This site brings together actors from the health and biotech ecosystem and provides the infrastructure needed for cutting-edge analytical laboratory work. The laboratory operates Monday to Friday from 08:00 to 17:00.<ref name="editus">[https://www.editus.lu/fr/llucs-esch-sur-alzette-958365 LLuCS listing – Editus]</ref>

LLuCS operates a fleet of refrigerated vehicles to ensure samples are transported under optimal temperature-controlled conditions.<ref name="linkedin">[https://lu.linkedin.com/company/llucs LLUCS sarl – LinkedIn]</ref>

==Services==

LLuCS provides analytical services structured around '''four areas of expertise'''.<ref name="infogreen" />

===Food analysis===

LLuCS performs analyses covering the entire food chain, from raw production to finished consumer products. Services include microbiological controls, nutritional value analyses, [[allergen]] detection, shelf-life studies, and testing for bacterial toxins and [[endotoxin]]s, including detection of viruses such as coronavirus and norovirus.<ref name="food">[https://www.llucs.lu/activites/analyse-alimentaire/ Food analysis – llucs.lu]</ref> The laboratory issues annual '''sanitary compliance certificates''' to partner establishments based on rigorous annual control plans.<ref name="food" />

===Water analysis===

LLuCS provides a comprehensive range of water analysis services covering all water types: drinking water, leisure/swimming pool water, technical water, medical water (dialysis, endoscopy), raw water, bottled water, wastewater, and domestic hot water. A particular speciality is the '''detection of Legionella''' bacteria, responsible for [[Legionellosis|Legionnaire's disease]].<ref name="water">[https://www.llucs.lu/activites/analyse-d-eau/ Water analysis – llucs.lu]</ref> Analyses cover both bacteriological and physico-chemical water quality parameters, in compliance with European directives.<ref name="water" />

===Hygiene analysis===

This area covers surface swabs, equipment testing, and dust analyses, notably in the context of food safety management plans ([[HACCP]]).

===Indoor air quality (IAQ)===

LLuCS has established itself as a reference actor in Luxembourg for '''indoor air quality''' (IAQ) testing. The laboratory assesses concentrations of chemical compounds, mould, particles, radon, and other pollutants in residential buildings, public-access establishments, offices, schools, and construction sites.<ref name="liava" /><ref name="iaq_infogreen">[https://www.infogreen.lu/la-qualite-de-l-air-sous-la-loupe-19467.html Indoor air quality analysis – infogreen.lu]</ref>

LLuCS has developed its own line of '''air sampling kits''' under the LLuCS brand, enabling individuals and professionals to take samples on-site and send them directly to the laboratory for analysis.<ref name="hobh" />

LLuCS also advises on environmental building certifications (BREEAM, LEED, DGNB, HQE, WELL, LENOZ) with respect to their indoor air quality requirements.<ref name="cert">[https://www.llucs.lu/certifications-qai/ Environmental certifications and IAQ – llucs.lu]</ref>

==Accreditation==

LLuCS holds accreditation from '''[[OLAS]]''' (Organisme Luxembourgeois d'Accréditation et de Surveillance) under the international standard '''[[ISO/IEC 17025]]:2017'''. This standard specifies the general requirements for the competence, impartiality and consistent operation of testing and calibration laboratories.<ref name="llucs_lab" /> The accreditation document is publicly available on the Luxembourg quality portal [https://portail-qualite.public.lu portail-qualite.public.lu].<ref name="careers" />

The standard requires, among other things:
*Validated analytical methods meeting European norms;
*Continuous metrological monitoring of equipment;
*Use of quality-grade reagents and culture media;
*Regular, targeted staff training to maintain a high level of competence.

==Methodology==

For each engagement, LLuCS follows a '''five-step structured sampling process''': joint definition of a customised sampling plan with the client; on-site sampling by qualified technicians; secure conditioning and labelling of samples; temperature-controlled transport; and laboratory analysis with result reporting.<ref name="food" /><ref name="water" />

Clients can pre-register samples and access results online through the secure '''LabPortal''' platform.<ref name="editus" />

==Partnerships and affiliations==

===LIAVA===

LLuCS is a founding member of '''[[LIAVA]]''' (''Luxembourg Indoor Air and Ventilation Association''), a non-profit association officially created in February 2025 to federate IAQ experts, promote best practices, and engage with Luxembourg's regulatory and institutional bodies. The association has initiated exchanges with [[Neobuild]], Luxembourg's construction innovation cluster, with further dialogue planned with government ministries and administrations throughout 2026.<ref name="liava" />

===Pando2===

LLuCS has partnered with '''Pando2''', a provider of real-time connected air quality monitoring solutions, to offer clients continuous IAQ monitoring through sensor networks complemented by laboratory analyses. This partnership was reported in '''NEOMAG #54''', the magazine of [[Neobuild]].<ref name="pando2">[https://www.infogreen.lu/la-premiere-application-de-gestion-de-la-qualite-de-l-air-en-temps-reel.html LLuCS–Pando2 partnership – infogreen.lu / NEOMAG#54]</ref>

===Octopus Lab===

LLuCS has partnered with French company '''Octopus Lab''' (Lille), a provider of AI-driven indoor air quality prediction and energy optimisation tools (INDALO® Supervision). This collaboration enables LLuCS to offer clients a complete IAQ management solution combining predictive analytics with laboratory measurement, with a focus on both occupant health and energy efficiency.<ref name="octopus">[https://www.infogreen.lu/l-ia-au-service-de-la-qualite-de-l-air-interieur-et-de-l-energie.html LLuCS and Octopus Lab – infogreen.lu (July 2024)]</ref>

===Infogreen===

LLuCS is a regular contributor and partner of '''[[Infogreen]]''', Luxembourg's main media platform dedicated to sustainable development. The laboratory publishes scientific articles on indoor air pollution, mould management, and water quality.<ref name="infogreen" />

==Media coverage==

*'''Editus''': listed on Luxembourg's professional directory [https://www.editus.lu/fr/llucs-esch-sur-alzette-958365 editus.lu].<ref name="editus" />
*'''Paperjam Bible''': company entry on Luxembourg's leading business guide [https://paperjam.lu/guide/organisation/01814742466/laboratoire-luxembourgeois-controle-sanitaire-llucs paperjam.lu].<ref name="paperjam" />
*'''Infogreen''': multiple articles, including in-depth interviews on IAQ, mould, and technology partnerships.<ref name="infogreen" /><ref name="liava" /><ref name="pando2" /><ref name="octopus" />
*'''NEOMAG (Neobuild)''': article on the LLuCS–Pando2 partnership (issue #54).<ref name="pando2" />
*'''House of BioHealth''': featured profile of LLuCS on the Esch-sur-Alzette health innovation campus website.<ref name="hobh" />

==Practical information==

{| class="wikitable"
|-
! Address || 27, rue Henri Koch, L-4354 Esch-sur-Alzette, Luxembourg
|-
! Phone || +352 288 376 300
|-
! Email || info@llucs.lu
|-
! Website || [https://www.llucs.lu www.llucs.lu]
|-
! Opening hours || Monday – Friday: 08:00 – 17:00
|-
! Trade register || B59614
|-
! VAT number || LU15712540
|-
! NACE code || 71.202 – Technical testing and analysis
|}

==References==

<references />

==See also==

*[[OLAS]] – Organisme Luxembourgeois d'Accréditation et de Surveillance
*[[ISO/IEC 17025]] – International standard for testing laboratories
*[[Esch-sur-Alzette]]
*[[House of BioHealth]]
*[[Neobuild]]
*[[HACCP]]
*[[Legionellosis]]
*[[Indoor air quality]]

==External links==

*[https://www.llucs.lu Official website – llucs.lu]
*[https://www.editus.lu/fr/llucs-esch-sur-alzette-958365 Editus listing]
*[https://paperjam.lu/guide/organisation/01814742466/laboratoire-luxembourgeois-controle-sanitaire-llucs Paperjam Bible entry]
*[https://www.infogreen.lu/laboratoire-luxembourgeois-de-controle-sanitaire-llucs.html Infogreen profile]
*[https://hobh.lu/focus-on-llucs/ House of BioHealth – Focus on LLuCS]
*[https://lu.linkedin.com/company/llucs LinkedIn page]
*[https://portail-qualite.public.lu Luxembourg Quality Portal (OLAS accreditation)]

[[Category:Companies of Luxembourg]]
[[Category:Laboratories]]
[[Category:Esch-sur-Alzette]]
[[Category:Public health]]
[[Category:Food safety]]
[[Category:Indoor air quality]]
[[Category:ISO 17025 accredited laboratories]]
[[Category:Companies established in 1993]]

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Llucs: MAJ