Veterinary tranquillizer in more than 70% of recent Thunder Bay, Ont., drug samples

More than 70 per cent of street drugs recently tested in Thunder Bay, Ont., have contained the veterinary tranquillizer medetomidine. The city continues to have the highest opioid-related death rate in the province at more than five times the average. Here's how mobile drug-checking services are helping people who use drugs, front-line workers and emergency responders amid the toxic drug crisis.