Directors’ Dealings July 2010

Immunodiagnostic Systems Holdings plc (“the Company”), a leading producer of diagnostic testing kits, received notification on 19 July 2010 that on that day 1,729,517 ordinary shares of 2p each in the Company (the “Ordinary Shares”), were successfully placed with institutional investors by directors at a price of 725p. The shares were placed in response to demand from institutional shareholders.

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