TY - JOUR KW - 3383:Drug & Alcohol Rehabilitation KW - a-PVP KW - Adulthood (18 yrs & older) KW - article KW - Drug Usage Screening KW - Empirical Study KW - Female KW - Finland KW - high-resolution mass spectrometry KW - Human KW - Longitudinal Study KW - Male KW - methadone maintenance KW - Middle Age (40-64 yrs) KW - naloxone KW - new psychoactive substances KW - Opiates KW - opioid maintenance treatment KW - Outpatient KW - polydrug abuse KW - Quantitative Study KW - Retrospective Study KW - Spectroscopy KW - Thirties (30-39 yrs) KW - Urinalysis KW - Young Adulthood (18-29 yrs) AU - Pertti Heikman AU - Mira Sundstrom AU - Anna Pelander AU - Ilkka Ojanpera A1 - BT - Human Psychopharmacology: Clinical and Experimental C5 - Opioids & Substance Use CP - 1 IS - 1 JF - Human Psychopharmacology: Clinical and Experimental PB - John Wiley & Sons PY - 2016 SN - 0885-6222, 0885-6222 SP - 44 EP - 52 EP - T1 - New psychoactive substances as part of polydrug abuse within opioid maintenance treatment revealed by comprehensive high-resolution mass spectrometric urine drug screening T2 - Human Psychopharmacology: Clinical and Experimental TI - New psychoactive substances as part of polydrug abuse within opioid maintenance treatment revealed by comprehensive high-resolution mass spectrometric urine drug screening U1 - Opioids & Substance Use UR - https://search.proquest.com/docview/1758183782?accountid=28100 VL - 31 VO - 0885-6222, 0885-6222 Y1 - 2016 ER -