DanceSafe’s fentanyl testing strips use immunoassay technology to quickly and reliably detect the presence of fentanyl and many of its known analogs in a drug sample. Fentanyl and its analogs are highly potent synthetic opioids responsible for the dramatic increase in heroin-related fatalities. They have also been found in counterfeit pharmaceutical pills as well as cocaine and other drugs. Includes complete instructions. Ten strips per pack. $14.90 per pack. Ten units total for $149. Suggested retail price: $20 per pack.