Bertrand de CASTELNAU

Chief Executive Officier

Aged 58, Bertrand de CASTELNAU has more than 25 years of experience in the field of diagnostics. He began his career as a Commercial Attaché in Islamabad, Pakistan. He then joined Roche in Switzerland, as a Corporate Auditor before moving to the Diagnostics division and then taking charge of the Asia-Pacific region for Roche Diagnostics, based in Singapore. Bertrand went on to become Chief Operations Officer at Guerbet for four years, before spending 10 years as Chairman of the Horiba ABX Group and leading the Horiba Medical division. Finally he joined DiaSys as CEO, head of Marketing, Sales and Finance. A fluent speaker of several languages, he holds an MBA from the École des Hautes Études Commerciales (HEC) and a law degree from Paris.



Theranostic Business Unit Director

Simon DAVIERE holds an engineering degree in biotechnology from Compiègne University of Technology (UTC) and a Master’s degree in Biotechnology from Lille University of Technology. He has a solid professional experience of more than 10 years in the in vitro diagnostics industry and personalized medicine, particularly in the field of chronic inflammatory diseases. He started his career at EUROIMMUN before joining Theradiag where he held several managerial positions in marketing and medico-marketing before managing the Theranostics Business Unit.



IVD & Services Business Unit Director

Sylvain LECOMTE holds a Master’s degree in biotechnologies and biochemistry engineering projects. He has an experience of 14 years in the In Vitro Diagnostic business at different positions in sales, technical and marketing positions. He worked for EUROIMMUN and WERFEN before joining Theradiag in 2013. He is now managing the IVD Business Unit and the After Sales Services.

Léa Bureau-Mantelet


Manufacturing Director

Léa BUREAU-MANTELET holds an engineering degree in biotechnology from Compiègne University of Technology  (UTC), she joined Theradiag 8 years ago. After a strong experience as system application specialist for Lisa Tracker kits and then at the head of Quality Control, she is now in charge of the production department. She is responsible for every step of production and for the whole supply chain.



Chief Financial Officer

Muriel Bardet is a gratuated of Audencia and holds a Master’s Degree in Finance Control and Audit of Université de Paris-La Sorbonne. She has an experience of more than 20 years in operational finance within the health industry. After a first position for Bristol Myers Squibb as finance controller, Muriel joins Sanofi for positions in internal audit, consolidation manager and finance director in charge of Asia and Latin America.  Muriel has also held the position of Financial Director of the Chugai-Sanofi joint-venture  before joining DNA Script as Finance Director.  At Theradiag she supervises the finance, HR and IT functions.