SAN FRANCISCO – State Senator Scott Wiener, D-San Francisco, introduced a bill on Tuesday that would prohibit law enforcement from making arrests or filing charges based only on certain field tests ...

COMMERCE CITY, Colo. (KDVR) — Colorado has become the first state to pass a law banning an arrest based solely on a colorimetric drug test, a common tool used by police to identify suspected narcotics ...

Developed by researchers at the University of Cambridge, the Colorimetrix app uses a smartphone’s camera to accurately read colorimetric test strips to monitor medical conditions. Researchers at the ...