Monitoring Xylazine and Fentanyl Co-Detection Through Urine Drug Testing Amidst Evolving Substance Availability
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By
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Janet E. Childerhose
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July 9, 2026
Original Source(s)
Using Urine Drug Testing to Track Xylazine-Fentanyl Copositivity in a Changing Drug Supply
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by Janet E. Childerhose
July 9, 2026
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