“New York’s top court today upheld random drug testing of New York City police officers through hair samples, a method considered much more effective than urine tests. “To ensure sobriety by the department for its own safety and to instill confidence in the community, we wanted to be able to use hair testing,” he said.”
https://www.nbcnewyork.com/news/local-beat/Court-Upholds-Hair-Drug-Tests-for-NYPD-79545902.html