Fentanyl Test Strips (IMAGE) Brown University Caption Firsthand accounts with young adults who use drugs find rapid-acting fentanyl test strips are an effective tool to reduce overdose risk. Credit Stephen Crocker/Brown University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.