Exhibit 16.1 Office of the Chief Accountant Securities and Exchange Commission 450 Fifth Street, N.W. Washington, D.C. 20549 June 28, 2002 Dear Sir/Madam: The representations made in this letter are based solely on discussions with and representations from the engagement partner and manager on the audits of the financial statements of this registrant. Those individuals are no longer with Arthur Andersen LLP. We have read the first four paragraphs of Item 4 included in the Form 8-K dated June 28, 2002, of Inverness Medical Innovations, Inc., to be filed with the Securities and Exchange Commission and are in agreement with the statements contained therein. Very truly yours, /s/ Arthur Andersen LLP - ----------------------- Arthur Andersen LLP cc: Mr. Ron Zwanziger, Chief Executive Officer Inverness Medical Innovations, Inc.