When she goes out, singer-songwriter Kalie Shorr always ensures she’s carrying the basics: wallet, keys—and fentanyl test strips.
“When I’m at clubs, people just whip out cocaine—on the dance floor, sometimes,” said Ms. Shorr, who is 28 and lives in Los Angeles.
When she sees drugs at a party or club, Ms. Shorr will nonchalantly offer up a test strip so people can test them for fentanyl, the dangerous synthetic opioid increasingly making it into a range of drugs across America.