Environmental toxicology and pharmacology · 2026
Tracing illicit and prescription drug use in a Spanish prison by combining wastewater analysis and pharmaceutical dispensing data.
СтатьяНазвание и аннотация: Перевод в очереди
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Egaña Iker, Nogales-García Maite, Akhrimenko Vladimir, Gónzalez-Gómez Xiana, Rodil Rosario, Montes Rosa, Quintana José Benito, Mestre-Pintó Juan Ignacio, Orive Gorka, Lertxundi Unax
Аннотация
BACKGROUND AND AIM: We combined wastewater-based epidemiology (WBE) and pharmaceutical dispensing records to distinguish between illicit and prescription drug use.
METHODS: We collected 24-h composite wastewater samples during three one-week campaigns in a prison in northern Spain. Samples were analysed for pharmaceuticals, illicit drugs, nicotine and alcohol. Population-normalised daily loads (PNDLs) were converted to consumption estimates and compared with Spanish population WBE estimates and pharmacy dispensing data.
RESULTS: Wastewater analysis showed high use of several pharmaceuticals, with the highest average PNDL for gabapentinoids. Pregabalin and gabapentin estimates from wastewater exceeded pharmacy dispensing, suggesting internal diversion. Cannabis consumption was about four times higher than community estimates and cocaine was also higher in all campaigns. Ketamine and MDMA use were above community medians during the February campaign and nicotine use was nearly ten times higher than community levels.
CONCLUSION: WBE identifies prescription drug diversion, illicit drug markets and quantifies licit substance use in prisons.
METHODS: We collected 24-h composite wastewater samples during three one-week campaigns in a prison in northern Spain. Samples were analysed for pharmaceuticals, illicit drugs, nicotine and alcohol. Population-normalised daily loads (PNDLs) were converted to consumption estimates and compared with Spanish population WBE estimates and pharmacy dispensing data.
RESULTS: Wastewater analysis showed high use of several pharmaceuticals, with the highest average PNDL for gabapentinoids. Pregabalin and gabapentin estimates from wastewater exceeded pharmacy dispensing, suggesting internal diversion. Cannabis consumption was about four times higher than community estimates and cocaine was also higher in all campaigns. Ketamine and MDMA use were above community medians during the February campaign and nicotine use was nearly ten times higher than community levels.
CONCLUSION: WBE identifies prescription drug diversion, illicit drug markets and quantifies licit substance use in prisons.