U.S. flag

An official website of the United States government, Department of Justice.

Principles of Forensic DNA for Officers of the Court

Challenges to Expert Testimony

Home  |  Glossary  |  Resources  |  Help  |  Contact Us  |  Course Map

Although DNA evidence has gained general acceptance and is presumed to be reliable for Daubert purposes, its use can be challenged in a particular case. Such challenges occur, for example, when "the procedure used in testing the DNA in this case did not comply with the accepted standards to ensure reliability" 21 and when the testing procedure used, although a variant of a previously approved method, is a new and "materially distinct procedure" that has itself not been proved to meet the Frye or Daubert standard. 22

Back Forward