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Trends in Urine Cotinine Concentrations Among Adolescents Who Vape Nicotine

JAMA Psychiatry 10.1001/jamapsychiatry.2026.2215

July 29, 2026 at 11:00 AM EDT

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This cohort study explores trends in urine cotinine concentrations between 2023 and 2025 among adolescents who vaped nicotine and were receiving substance use disorder treatment.

Corresponding Author: Sharon Levy, MD, MPH, Division of Addiction Medicine, Boston Children’s Hospital, 300 Longwood Ave, Boston, MA 02115 (sharon.levy@childrens.harvard.edu).

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