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…