About Us

The mission of Forensic Test Preparation, LLC is to provide forensic certification test preparation services to forensic scientists and those preparing for a career in forensic sciences.  The company was established in 2009 by Roger Kahn, Benjamin Kahn and Lisa Gefrides.

Roger Kahn, Ph.D., F-ABC, earned his doctoral degree in human genetics from Yale University in New Haven, Connecticut, in 1983.   Dr. Kahn began his forensic laboratory career in 1988 as the technical leader and senior DNA analyst for the Miami-Dade Police Department Crime Laboratory.  In 1996, he became the DNA laboratory director of the Ohio Bureau Criminal Identification and Investigation and, in 1997, was named laboratory system director overseeing all disciplines of the state of Ohio’s three crime laboratories.  In 2005, Dr. Kahn was named forensic genetics laboratory director of a large county medical examiner’s office in the southwest region of the U.S. and in 2013 he became director of all sections of the crime laboratory.  He is a past president of the American Society of Crime Laboratory Directors, a fellow of the American Academy of Forensic Sciences, and a former member of the FBI’s Scientific Working Group on DNA Analysis Methods.  He is the author of a variety of publications in basic DNA research and forensic DNA.  He is certified by the American Board of Criminalistics as a Fellow in Molecular Biology.

Benjamin Kahn, B.S., took his degree in computer engineering from Columbia University in New York City, in 1998.  He created one of the first online video games,  S.P.Q.R., and later helped expand it into one of the first online community web sites.  In 2000 he became interested in Open Source software and joined a major Linux Desktop company.  He is currently a senior program manager at Red Hat, Inc., a Linux vendor active in the Open Source community.

Lisa Gefrides, M.S., F-ABC, received a Master of Science degree in genetics from Texas A&M University in 1998.  She began her forensic career in 2000 as a DNA analyst for a large county medical examiner’s office in the Southwestern region of the U.S. and in 2006 was named manager of quality, research, training, and validation for the forensic genetics laboratory, a position she held until her retirement in 2011.  She currently consults and performs audits for forensic DNA testing labs.  She is the author of publications in basic DNA research including a book chapter on forensic serology and DNA.  She is a member of the Association of Forensic DNA Analysts and Administrators and in 2007 was certified by the American Board of Criminalistics as a Fellow in Molecular Biology.