Common use of PRO FORMA NET LOSS PER COMMON SHARE Clause in Contracts

PRO FORMA NET LOSS PER COMMON SHARE. For the year ended December 31, 2007, the unaudited pro forma combined company basic and diluted net loss per common share amounts are calculated based on the weighted average number of Inverness common shares outstanding prior to the respective acquisitions plus the adjustments to such shares giving effect to the Inverness common shares issued or expected to be issued upon the closings of the respective acquisitions and the related financings, as if such transactions had occurred on January 1, 2007. Common stock equivalents resulting from the assumed exercise of Inverness’ stock options, warrants, or preferred stock are not included in the pro forma combined company diluted net loss per common share calculation for the year ended December 31, 2007 because inclusion thereof would be antidilutive.

PRO FORMA NET LOSS PER COMMON SHARE. For the year ended December 31, 2007, the unaudited pro forma combined company basic and diluted net loss per common share amounts are calculated based on the weighted average number of Inverness common shares outstanding prior to the respective acquisitions plus the adjustments to such shares giving effect to the Inverness common shares issued or expected to be issued upon the closings of the respective acquisitions and the related financings, as if such transactions had occurred on January 1, 2007. Common stock equivalents resulting from the assumed exercise of Inverness’ stock options, warrants, warrants or preferred stock are not included in the pro forma combined company diluted net loss per common share calculation for the year ended December 31, 2007 because inclusion thereof would be antidilutive.

PRO FORMA NET LOSS PER COMMON SHARE. For the year ended December 31, 2006 and the nine months ended September 30, 2007, the unaudited pro forma combined company basic and diluted net loss per common share amounts are calculated based on the weighted average number of Inverness common shares outstanding prior to the respective acquisitions plus the adjustments to such shares giving effect to the Inverness common shares issued or expected to be issued upon the closings of the respective acquisitions and the related financings, as if such transactions had occurred on January 1, 20072006. Common stock equivalents resulting from the assumed exercise of Inverness’ stock options, warrants, or preferred stock are not included in the pro forma combined company diluted net loss per common share calculation for the year ended December 31, 2006 and the nine months ended September 30, 2007 because inclusion thereof would be antidilutive.

PRO FORMA NET LOSS PER COMMON SHARE. For the year ended December 31, 2006 and the six months ended June 30, 2007, the unaudited pro forma combined company basic and diluted net loss per common share amounts are calculated based on the weighted average number of Inverness common shares outstanding prior to the respective acquisitions plus the adjustments to such shares giving effect to the Inverness common shares issued or expected to be issued upon the closings of the respective acquisitions and the related financings, as if such transactions had occurred on January 1, 20072006. Common stock equivalents resulting from the assumed exercise of Inverness’ stock options, warrants, options or preferred stock warrants are not included in the pro forma combined company diluted net loss per common share calculation for the year ended December 31, 2006 and the six months ended June 30, 2007 because inclusion thereof would be antidilutive.