The biotech company BTNX says it is shipping out new test strips this week that detect the presence of xylazine, an animal sedative that officials say is increasingly being mixed with fentanyl. As ...

Test strips still face major obstacles even in states where they are legal. For one, they cost roughly $1 each — an amount that adds up quickly for people who use drugs daily, or for ...

Fentanyl test strips have been shown to be highly effective and cost-efficient at fighting the crisis, but Texas is one of the few states that has not decriminalized them.(RJ Sangosti/MediaNews ...

While fentanyl test strips are highly effective and seen as a key component of U.S. harm-reduction efforts, the authors wrote, there has been little research on how to maximize their potential uses.

The center provides free fentanyl test strips to those who request them. It also provides free or low-cost, comprehensive, judgment-free addiction recovery services.

To some opponents, the test strips are even more objectionable than other forms of harm reduction, like distributions of clean syringes, because those at least prevent the spread of H.I.V., ...