Immunodiagnostic Systems Holdings plc (IDS) manufactures and distributes medical diagnostic products. The Company is also involved in research and development projects. Its range of products includes bone and growth-related products. The principal products of IDS continue to be kits for the determination of vitamin D in human serum. IDS operate in the immunoassay segment of the in vitro diagnostics (IVD) market. Its subsidiaries include Immunodiagnostic Systems Limited, Immunodiagnostic Systems Inc, IDS GmbH, IDS Eurl, Suomen Bioanalytiikka Oy and Briefvision Limited. In January 2009, it completed the sale of IDS Biocode Hycel’s haematology business to Escalon Medical Corporation.