In 1992, Dr. Ruinemans-Koerts obtained a Master's degree in molecular sciences at the Agricultural University of Wageningen, and in 1996, Dr. Ruinemans-Koerts obtained a PhD at this same university; Dr. Ruinemans-Koerts is a member of the Supervisory Board of the ECAT foundation and a member (secretary) of the board of the Dutch Cytometry Association. In collaboration with the Allergology Practice Arnhem and the University of Wageningen, Dr. Ruinemans-Koerts is conducting research into the mechanism of allergic disorders and developing new, more specific laboratory tests. Dr. Ruinemans-Koerts has been working at Rijnstate since 2001