Share Options December 9th 2009

Immunodiagnostic Systems Holdings PLC (“the Company”), a leading producer of diagnostic testing kits, announces that on 9 December 2009, certain Directors exercised options over in aggregate 1,134,297 ordinary shares of 2p each in the Company (“Ordinary Shares”) and subsequently placed 505,628 ordinary shares in aggregate with a number of institutional investors.
Notification was received by the Company yesterday. Application will be made at the earliest practicable opportunity for admission of the new ordinary shares to trading on AIM.