Fentanyl was identified in California’s drug supply much later than in the rest of the US

Share of drug seizure reports

Source: US Department of Justice National Forensic Laboratory Information System (NFLIS) public query data system.
NOTES: The NFLIS-DRUG is a program that systematically collects drug identification results and associated information from drug cases submitted to, and analyzed by, participating forensic laboratories. Though voluntary, it includes 50 state systems, 111 local or municipal laboratories/laboratory systems, and federal data from DEA and US Customs and Border Protection laboratories.
Download image Get the data