Gold Standard Diagnostics CD Kassel GmbH (formerly Immunolab Clinical Diagnostics GmbH, Omega Diagnostics GmbH and IVD division of ALLERGOPHARMA Joachim Ganzer KG) has been based in Kassel since 2021 and serves as a sales organization for in vitro allergy diagnostics, the production of which is now carried out by Gold Standard Diagnostic Kassel GmbH. For more than 30 years, GSD CD Kassel and its predecessors have been known as one of the leading suppliers of ELISA kits for in vitro allergy diagnostics, successfully distributing products and services to national and international business partners in this globally growing market segment.