A fentanyl drug testing kit warns about the dangers of xylazine, which is not yet detectable in street testing.
Mandatory Credit: Kris Craig/The Providence Journa/USA Today Network/FILE
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DEA issues alert about widespread threat of xylazine
The US Drug Enforcement Administration issued an alert Monday about the widespread threat of fentanyl mixed with xylazine, a veterinary tranquilizer also commonly known as "tranq" or "tranq dope."
