Preliminary Results for the Year Ended 31 March 2010

Immunodiagnostic Systems Holdings plc (“IDS” or the “Company” or the “Group”), a leading producer of diagnostic testing kits for the clinical and research markets, announces its preliminary results for the year ended 31 March 2010.

IDS operates in the in-vitro diagnostics (“IVD”) market. The Company designs, manufactures and sells immunoassay kits which are used to measure or detect particular substances within a sample, thus aiding the diagnosis or monitoring of a disease or providing information for research studies. In 2007 the immunoassay sector of the IVD market was estimated to be worth US $10bn.