Cross contamination | The Truth About Forensic Science

Contamination and Cross-Contamination: Understanding the Risks of DNA Evidence

On March 2, 2023, in DNA, by Justin J. McShane

There is a particular danger that attaches to DNA evidence. Thanks to the widespread viewing of fictional crime dramas, there is a built in prejudice that jurors have that DNA evidence means guilt. This is not so. It is not automatic. One way that DNA evidence can be falsely used in a case is due […]

TSA Agents Amanda Zug, Shawn Knaub and Kendall Bradley provide a teachable moment in cross-contamination and the need to adhere to contamination protocol

On December 19, 2014, in Equipment, Explosive Residue, Trace Evidence, by Justin J. McShane

TSA Agents Amanda Zug, Supervisor Shawn Knaub and Manager Kendall Bradley provide a teachable moment in cross-contamination and the need to adhere to contamination protocol I begin this post with a declaration and acknowledgment upfront. I am a Trusted Traveler. I went through the application, background check, and less to obtain my Global Entry ID. […]

Josh D. Lee is a Vinita, Oklahoma based criminal defense attorney. He is nationally recognized as a lawyer-scientist for his expertise on forensic science related topics. He has lectured well over 100 times in 18 diﬀerent states.

Mr. Lee has been invited to lecture at the American Chemical Society (ACS) as well as the American Academy of Forensic Science (AAFS). In 2011, Josh was elected Forensic Science Co-Chairman for the Chemistry and the Law Division of the ACS. He is also an “Assistant Chromatography Instructor” for the ACS.

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