The Centre for Human Drug Research (CHDR) operates as a comprehensive early-phase contract research organization situated in Leiden, the Netherlands. Our extensive range of clinical pharmacology services, tailored for the (bio-)pharmaceutical sector, is characterized by a strong emphasis on data quality and innovation. Leveraging cutting-edge technologies and a highly skilled team of researchers, we strive to optimize the success of our clients. Furthermore, we are deeply committed to ensuring the comfort and safety of our participants while actively contributing to the education of medical and clinical research communities.