Since 2018, GBN, in cooperation with TÜV Süd, has twice trained approximately 15 experts from the GBA community as auditors. They have been active as auditors within the GBA since then. The training courses comprised a three-day standard-specific part and a two-day subject-specific part with biobanking experts. The training was completed with an online test and a "witness audit", in which the technical and standards-specific competence was tested. In addition to members of the GBA community, representatives of the German Centers for Health Research and the National Cohort participated in each training session.