About us

Our company

C4Diagnostics is a French-based biotech founded in 2017 and specialized in the development of in vitro diagnostic (IVD) tests for human infectious diseases.

Our proprietary Click-chemistry technology is at the core of our portfolio of rapid diagnostic tests, which currently focuses on the diagnosis Legionnaires’ Disease (C4Legio-LFA), urinary tract infections (C4UTI) and the development of antimicrobial susceptibility tests (C4AST).

Laboratory of C4Diagnostics

Our vision

We believe that rapid and reliable diagnostic tools are game changing in the way infectious diseases are handled, lead to better patient care, and bring a powerful leverage to fight antimicrobial resistance.

We are committed to bringing reliable and actionable diagnostic information to healthcare professionals in a timely manner.


Our values

More than just words, those values are shared amongst C4Diagnostics team members and partners.

Team of C4Diagnostics - June 2021
Patient Care, a priority at C4Diagnostics

Patient Care

We believe infectious diseases can be managed differently. Every day we strive to improve patient care and save lives.

We are committed to provide healthcare professionals with rapid, reliable and highly sensitive diagnostic solutions, as well as ready-to-use and user-friendly.

We are able to meet tight deadlines and pivot if need be, as shown with the COVID19 pandemic.


Team spirit

At C4Diagnostics, we believe that two heads are better than one, three are better than two… We move forward and grow collectively and individually by collaborating together.

Different by background, age, or experience, our employees are one of our greatest assets.

We all share the same mantra: succeeding as a team.

L'agilité de C4Diagnostics

Business agility and commitment

When we cope with difficulties, hardships, unexpected events, far from giving up, we bounce back and adapt quickly offering alternatives.

For example, from the start of the Covid-19 crisis, we were among the first to step up by offering COVID19 testing solutions, without neglecting our initial roadmap.

It reflects our agility and versatility.


C4Diagnostics was founded from an observation. In the diagnostic, there are fast solutions but not very sensitive, or very sensitive solutions but with a long delay for the results. We succeeded in combining the two. This is our company’s signature.

Younes Lazrak

Founder & CEO, C4Diagnostics

Our main milestones


Company creation

C4Diagnostics was founded in Marseille in May 2017 by Younes Lazrak, Emilie Fugier and Sam Dukan.


Series A fundraising of € 2,3 M

C4Diagnostics raises € 2.3 Million in Series A and
brings a US investor to the founding round, to
accelerate the deployment of its infectious
diseases’ diagnostic solutions


Market-stage company

C4Covid-19 Human, our test for the rapid diagnostic of Covid-19 from a saliva sample is CE marked since March 2021. This is our first in vitro diagnostic product CE marked and on the market for a medical use.


The management team of C4Diagnostics is composed of collaborators experienced in the research, development, implementation and marketing of in vitro diagnostic medical devices.

Management team

Younes Lazrak, MBA, MSc

Founder & CEO


Younes worked in Business Development and IP management in several in vitro diagnostics companies (Incl. Ipsogen & Qiagen). His main responsibilities were Licensing in & out and the management of the industrial intellectual ownership, before progressively shifting to Business development and alliances management. He founded C4Diagnostics in May 2017 with Emilie Fugier and Sam Dukan.

Émilie Fugier, PhD

Founder & Head of Technology and Innovation


After a PhD in microbiology and immunology, Emilie has managed various scientific projects involving pathogenic organisms with industries and hospitals. In 2012, she joined Sam Dukan's team in the CNRS to work on the technology used by C4Diagnostics. After being R&D Head, she is currently Head of Technology & Innovation.

Thierry Maunier, MSc

Head of Quality


Thierry served as Quality Assurance and Quality Control Manager in various Medical Device design and manufacturing companies. Quality Systems he implemented and managed have efficiently fulfilled international standards and regulation requirements. He joined C4Diagnostics in April 2019 as Head of Quality.

Guillaume Tournier

Head of Finance & Accounting


With a Master in Controlling, Guillaume has more than 15 years of experience in Finance functions, notably in corporate financial management. In July 2021, he joined the C4Diagnostics’ team as Head of Finance and Accounting make the company's financial information reliable and secure.

Dhikra Feki, PharmD

Head of Regulatory Affairs & Market Access


After a Pham.D degree, and a Master degree in regulatory affairs, Dhikra has managed the RA for local market within different manufacturing companies. She was in charge of implementing registration strategies and advising on legal and scientific requirements. In july 2021, she joined C4Diagnostics as Head of Regulatory Affairs and Market Access.

Strategic board


Chariman of the board / CEO

IVD – 18+ years exp.


Medical Affairs

Medical Affairs – 20+ years exp.

Independant (former Qiagen, EMD Serono) 


Board member

FInance – 30+ years exp.

Investment Manager (CAAP Création)

Jean-François GRENIER

Market Access

Strategy advisor – 25+ years exp.

Angels santé (former Bayer, Bristol-Myers Squib)

Emilie Fugier

Head of Technology & Innovation / Co-founder

R&D- 15+ years exp.


Board member

Chemistry and business owner 15+ years exp.

Founder & Managing Director (Click Chemistry Tools)

Sandra DUBOS

Board member

Finance – 16+ years exp.

Investment Manager (Kreaxi)


Board member

Finance / IVD – 20+ years exp.

General Manager (Cisbio Bioassays)


Board member

Venture Capital and Growth Capital – 6+ years exp.

Senior Associate (Turenne Capital)

Join us

Discover our page Careers.