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Stability and Persistence of Touch DNA for Forensic Analysis

Event Dates

The webinar will review existing scientific literature, describe lessons-learned and best practices for conducting experiments with touch DNA, and describe the initial results of a study designed to evaluate the stability of touch DNA under different environmental conditions. Five controlled environmental conditions were established with highly controlled temperature, relative humidity, and ultraviolet light levels. A formal randomization scheme was implemented to minimize sources of potential variability. The stability of both control DNA and touch DNA samples collected from donors was evaluated. 

3 Detailed Learning Objectives

  • Understand the significance and challenges of working with touch DNA evidence
  • Learn best-practices for design of experiments involving touch DNA
  • Learn the impact of environmental conditions on the stability of touch DNA.


  • Dr. Natalie Damaso, Massachusetts Institute of Technology Lincoln Laboratory
  • Dr. Meghan Ramsey, Massachusetts Institute of Technology Lincoln Laboratory


Date Created: February 17, 2021