Dan C. Purdy, B.Sc., FSSSocDip., FFSSoc, D-ABFDE


Dan Purdy joined Forensic Document Examination Services, Inc. (FDES) in 1999 after working for 30 years as a scientist in the Royal Canadian Mounted Police (RCMP) forensic laboratories.

Mr. Purdy received a Bachelor of Science degree from the University of B.C. and trained to become a forensic scientist at the RCMP's Vancouver Laboratory from 1969 to 1971.  In 1979, he moved to Ottawa and worked in the RCMP's Central Forensic Laboratory as a document examiner.  In 1985 he was appointed head of the agency's Document Operational Support unit and a year later head of the Ottawa Document Section.  In 1989, Mr. Purdy was promoted to Chief Scientist Document Services, a position he occupied until 1999 when he left the RCMP to work in the private sector.

Active in many professional organizations, Mr. Purdy joined the Canadian Society of Forensic Science (CSFS) in 1971 and served terms as a Chairperson, Director and Society Treasurer. He was elected a Fellow of the CSFS at its 1997 meeting in Regina.  Mr. Purdy has been a member of the American Society of Questioned Document Examiners (ASQDE) since


1991 and was a member of its Editorial Board for several years.  He was appointed a Director of the ASQDE during its 1994 meeting and occupied several positions on its Executive Committee before serving as Society President from 2004 to 2006.  He is also a member of the American Academy of Forensic Science and a Fellow of the Forensic Science Society.


Mr. Purdy's professional qualifications as a document examiner are regularly reviewed by two independent certification bodies. He was awarded a Certificate of Qualification in Forensic Document Examination by the American Board of Forensic Document Examiners (ABFDE) in 1980 and served on its Board of Directors for 7 years and as ABFDE President from 1993 to 1995. Mr. Purdy also holds a diploma in Forensic Document Examination issued by the Forensic Science Society in 1985. Both of these internationally recognized bodies review the qualifications of their certified diplomats on a regular basis.

In 2012, he was presented with the Albert S. Osborn Award of Excellence by the American Society of Questioned Document Examiners and in 2015 the American Academy of Forensic Science presented him with an Award of Merit.

During his career, Mr. Purdy has written more than 25 scientific papers on various topics related to forensic document examination. He has examined over 4500 cases involving more than 60,000 documents and has testified as an expert witness over 300 times in British Columbia, Alberta, Manitoba, Ontario, Quebec, Newfoundland & Labrador, the Yukon Territory, Nunavut, Bermuda, the United States and Hong Kong.

To view a complete list of Mr. Purdy's professional qualifications, please click on the following hyperlink: Dan Purdy.