A case of driving under the influence of drugs with an extremely high blood fentanyl concentration and concomitant use of methamphetamine is presented. As the increase of the appearance of fentanyl in drug seizures continues, the likelihood of tolerant users increases as well. Data presented on fentanyl in antemortem cases over time from several regions of North America show geographic differences on whether fentanyl concentrations are increasing. This case is an example of a blood concentration that could have been assumed to be fatal if presented on its own, a reminder that concentrations, especially those of opioids, must be interpreted with care.

中文翻译：

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驾驶员中芬太尼浓度异常高：病例报告

介绍了一个在血液中芬太尼浓度极高的药物影响下驾驶并同时使用甲基苯丙胺的案例。随着药物癫痫发作中芬太尼出现的持续增加，耐受性使用者的可能性也增加。随着时间的推移，北美几个地区的死前病例中的芬太尼数据显示了芬太尼浓度是否增加的地理差异。这个案例是一个血液浓度的例子，如果单独出现，可能会被认为是致命的，提醒人们必须谨慎解释浓度，尤其是阿片类药物的浓度。