The mass spectrum on the analyte in these deaths corresponded to not fentanyl, but to acetyl fentanyl. The structural similarity concerning fentanyl and acetyl fentanyl is believed to have brought about the Bogus good fentanyl ELISA final results which were found in the Rhode Island Department of Well being Laboratories. https://brookstdmvb.amoblog.com/the-greatest-guide-to-fentanyl-bust-california-61720026