The Department of Forensic Science discontinued accepting evidence for Questioned Documents Examinations on October 14, 2016. All Questioned Documents services have been suspended as of January 1, 2017. Click here for the Service Reduction Memo.
For information on how to preserve certain types of Questioned Document evidence please see: http://www.swgdoc.org/index.php/standards/published-standards
(SWGDOC Standard for Preservation of Charred Documents and SWGDOC Standard for Preservation of Liquid Soaked Documents are near the bottom).