The mass spectrum on the analyte in these deaths corresponded to not fentanyl, but to acetyl fentanyl. The structural similarity amongst fentanyl and acetyl fentanyl is thought to possess brought on the false positive fentanyl ELISA outcomes which were found within the Rhode Island Office of Health and fitness Laboratories. https://buybathsaltbags86296.fitnell.com/80749481/how-fentanyl-button-can-save-you-time-stress-and-money