The DOSE system uses standardized surveillance definitions established by the CDC to measure non-fatal overdoses presenting to emergency departments in Nevada. The current definition allows for measures for nonfatal overdoses of unintentional or undetermined intent involving all drugs, all opioids, fentanyl, heroin, all stimulants, cocaine, methamphetamine, and benzodiazepine. The data are typically available within a few days of the visits and allow for rapid assessment of trends and identification of overdose spikes and emerging issues. However, the data are reliant on provider reporting and there is no confirmatory toxicology testing for substance involved. Additionally, not everyone who overdoses presents to an emergency department and so these data may underestimate the total nonfatal overdose burden in the state.