RT info:eu-repo/semantics/article T1 Roadside opioid testing of drivers using oral fluid: the case of a country with a zero tolerance law, Spain A1 Fierro Lorenzo, María Inmaculada A1 Colás, Mónica A1 González Luque, Juan Carlos A1 Álvarez González, Francisco Javier K1 Drug abuse K1 Abuso de sustancias K1 Oral fluids K1 Fluidos orales K1 Driving K1 Conducción K1 Drug testing K1 Detección de drogas AB Background: Opioids can impair psychomotor performance, and driving under the influence of opioids is associated with an increased risk of accidents. The goals of this study were i) to determine the prevalence of opioids (heroin, morphine, codeine, methadone and tramadol) in Spanish drivers and ii) to explore the presence of opioids, more specifically whether they are used alone or in combination with other drugs. Methods: The 2008/9 DRUID database regarding Spain was used, which provided information on 3302 drivers. All drivers included in the study provided a saliva sample and mass-chromatographic analyses were carried out in all cases. To determine the prevalence, the sample was weighted according to traffic intensity. In the case of opioid use combinations, the sample was not weighted. The detection limit for each substance was considered a positive result. Results: The prevalence of opioids in Spanish drivers was 1.8% (95% CI, 1.4–2.3). Polydrug detection was common (56.2%): of these, in two out of three cases, two opioids were detected and cocaine was also detected in 86% of the cases. The concentration (median [Q1-Q3] ng/ml) of the substances was low: methadone 1.71 [0.10–15.30], codeine 40.55 [2.10–120.77], 6-acetylmorphine 5.71 [1.53–84.05], and morphine 37.40 [2.84–200.00]. Morphine was always detected with 6-acetylmorphine (heroin use). Conclusions: Driving under the influence of opioids is relatively infrequent, but polydrug use is common. Our study shows that 6 out of 10 drivers with methadone in their OF (likely in methadone maintenance programs) are using other substances. This should be taken into account by health professionals in order to properly inform patients about the added risks of mixing substances when driving. PB Springer Nature SN 1747-597X YR 2017 FD 2017 LK http://uvadoc.uva.es/handle/10324/45798 UL http://uvadoc.uva.es/handle/10324/45798 LA eng NO Substance Abuse Treatment, Prevention, and Policy, 2017, vol. 12. 7 p. NO Producción Científica DS UVaDOC RD 27-abr-2024