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About Us

We aid the transition from animal-based to in-vitro human-based pyrogen testing to increase patient safety and save animal lives.

To achieve this, we’ve been developing the Monocyte Activation Test (MAT) since 2016.

Our Vision

We fully support the decision taken by the European Pharmacopoeia (Ph. Eur.) to completely replace the rabbit pyrogen test (RPT) with the monocyte activation test (MAT) before 2026.

The MAT has been developed for nearly 50 years, but there has been a lack of public awareness around this topic. With the new course of the EDQM, we can finally push for the implementation of the MAT as the new standard testing method for pyrogens.  


Rabbits can be saved worldwide per year


Horseshoe crabs can be saved in the US per year


Quality You Can Rely On

We’re ISO:9001:2015 Certified to ensure the highest levels of quality for our products and services.

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Meet Our Team

About our CEO and Team member Guillermo Sanchez!

Guillermo Sanchez

Founder and CEO

As a serial entrepreneur since 2006, Guillermo has gained extensive experience building disruptive products and companies. Since 2016, he has collaborated with over 30+ industry-leading companies to co-develop the MAT kit and automation. Guillermo has been involved in solving challenges from the production and transport of cell sources to bridging the challenges between product, lab, and regulations.

Peter Brugger

Scientific Advisor

Peter has dedicated his life to the quality of pharmaceuticals and has played a pivotal role in developing and implementing the Monocyte Activation Test. More than 40 years of experience in the field at Novartis and Lonza, and has (co)authored numerous scientific articles.

Ali Seyedmehdi

Head of People

Passionate about People and Technology. Ali has over 20 years of experience in IT, Operations, HR, Recruitment, company building, and management at start-up, scale-up, and corporate stages.

Priscilla Kerkman

Senior Scientist

Dr. Priscilla Kerkman has more than 12 years of experience in immunology and has developed a passion for the human immune system and how it can be utilized to improve people’s lives. She has used various techniques to identify and study human cells and antibodies in autoimmunity, virology, and bacteriology. Next to her experience in the lab, she’s been a project manager. She likes organizing external and internal projects with multiple stakeholders, teaching and supervising colleagues, gathering all data to perform data analysis, and giving presentations on the project’s progress.

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Fleur de Roos

Research Associate & Lab Manager

Gaining a solid basis in chemistry during her study, Fleur moved more towards biochemistry. During an internship abroad, further interest was sparked in the startup environment as well as animal-free solutions. Therefore, the challenge to streamline production and further develop the MAT test is right up her lane.

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Eva Kritikou

Program Manager

Dr. Eva Kritikou has more than eight years of immunology experience in academic research and three years of experience in the CRO-industry. Her passion for biomedical research drove her to acquire her PhD in the field of immunology in Leiden, followed by a 3-year postdoctoral fellowship at Harvard Medical School. Upon completion, she returned to Leiden to pursue her interests in the biopharmaceutical industry, where she expanded her skills in business acquisition and project management, leading multimember teams of technicians and scientists while serving as a mentor in managing projects and business development.

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Arginell Girigorie

Research Technician

Arginell Girigorie brings a robust background in biomedical research to his role as a Research Technician at MAT Research. With significant experience gained at prestigious institutions like the Amsterdam UMC and Wageningen Bioveterinary Research, Arginell has contributed to cutting-edge studies in immunology and virology. His work has included investigating the role of T-cell differentiation in HIV treatment outcomes and exploring the impact of viral proteins on HIV-1 infectivity. Arginell’s technical skills and meticulous attention to experimental detail enhance our team’s capabilities in advancing research that tackles complex scientific questions. His dedication to leveraging science for better health outcomes makes him a vital addition to our research endeavors.

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Alice Bacon


Alice Bacon is a Scientist with profound expertise in the biomedical and biochemical sciences. As a Marie Curie PhD fellow at Leiden University Medical Center, she has notably contributed to the ArthritisHeal project, focusing on glycomic and lipidomic studies pertinent to Rheumatoid Arthritis. Her research has enabled a deeper understanding of the effects of immunoglobulin subclasses on macrophage behavior and lipid metabolism, which is critical for innovating therapeutic strategies. Alice’s analytical skills and dedication to her field make her an invaluable addition to our team as we continue to explore and innovate within the immunology and biomedical research arena.