Testing the poison: Chemists allow ‘evidence to speak for itself’ ANNE ARUNDEL COUNTY, Maryland—As part of their role in the justice system, forensic chemists are using laboratory tests to identify fentanyl and other opioids. Share this:Click to share on X (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Reddit (Opens in new window)Click to email a link to a friend (Opens in new window)Click to print (Opens in new window) August 24, 2017