The overdose-reversal nasal spray known as Narcan has already saved lives in West Marin, according to the West Marin group that distributes it. Now the West Marin Community Response Team is offering another tool to combat the overdose epidemic: fentanyl test strips. This month, team members will be attaching the test strips to Narcan boxes in a growing number of locations. The strips provide results in under five minutes for drugs such as cocaine, methamphetamine and heroin—the most common drugs that contain lethal doses of fentanyl—whether they are in pill, powder or injectable form. Overdoses occur once every six days across the county and are the leading cause of death for residents under age 55. According to estimates, there will be nearly 70 overdose deaths in Marin this year. Six out of 10 fatal overdoses are related to fentanyl, a synthetic opioid 50 times stronger than heroin. Narcan can be applied by bystanders, who sometimes need multiple kits to do the job. Seamus Tomkins, a co-lead of the West Marin Community Response Team, said the group was the first in the county to set up a network of Narcan distribution sites. The medication is available in 24-hour-access boxes outside the Bolinas Community Center, the Olema Campground, West Marin Pharmacy, the San Geronimo Valley Community Center and the post office and firehouse in Inverness. Soon, the Tomales Town Hall, the Stinson Beach fire station, the San Geronimo Valley Presbyterian Church and the Papermill Creek Saloon will install boxes. “There’s still a lot of stigma around this stuff, so having these 24-hour boxes allows some anonymity, which might really make a difference with the test strips, too,” Mr. Tomkins said. “Some of the boxes get used more than others, but the one in Point Reyes, I’m having to restock it all the time.” Connie Morse, an Inverness resident and liaison to the response team, first had the idea to install the boxes on the coast. “When Narcan started becoming available, the question was, ‘So how do you do this? Do you have it at the clinic, which is just open certain times?’ I felt there’s got to be autonomy about it, to not have to answer any questions or show your face. So the boxes are great,” she said. “Being a grandmother of two teenagers, I am always pushing for parents to have Narcan. You don’t have to wait for someone to be having difficulty on the sidewalk.”