Analytical test strip fights fentanyl overdoses

An image of a drug syringe and some cooked heroin on a spoon

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Simple chemical analysis helps drug users prevent overdosing on deadly opioid

A test strip that was originally developed for doctors to determine if patients are taking their pain medication is now helping stop drug users overdosing. The simple test can spot the presence of fentanyl, a powerful opioid drug sometimes added to heroin.