First case of drug-facilitated sexual assault involving metizolam.
Marie Bellouard, Adeline Knapp, Charlotte Mayer et al.
✦ AI-curated · Sources linked
Case in brief
A 16-year-old with no prior medical or substance-use history was assessed 21 hours after waking with amnesia and signs consistent with sexual assault. Blood testing found no psychotropic substances or alcohol; GHB was within endogenous ranges. Targeted analysis of hydrolysed urine detected metizolam (11 ng/mL), metoclopramide (0.2 ng/mL) and ethyl glucuronide (> 20 µg/mL), indicating recent alcohol consumption. Metizolam was absent from hair sampled at the same time, supporting a single recent intake. The findings documented metizolam exposure in the context of suspected drug-facilitated sexual assault.
What made this case unusual
The case documents suspected drug-facilitated sexual assault involving metizolam, a designer benzodiazepine, with the compound detected in urine despite negative blood testing and absence from hair.
Diagnostic / clinical pearl
A negative blood result or routine toxicology screen does not exclude designer benzodiazepine exposure. In suspected drug-facilitated assault, targeted methods such as LC-MS/MS or LC-HRMS may be needed to detect these compounds.
Why it matters
The report adds analytical case data that may support forensic awareness and medico-legal assessment as new designer benzodiazepines emerge.