Fentanyl test strips are a tool to test unregulated drugs for the contamination of fentanyl and various fentanyl analogs in powder and pill form. While helpful, it is important to keep the following notes in mind.
Fentanyl test strips do not provide an amount or quantity of fentanyl present in the substance, which means there could be a lethal dose. They also do not test for all the fentanyl analogs. A negative result does not guarantee the substance being tested is free from fentanyl or other synthetic opioids.
When using unregulated drugs, it is vital to employ safer drug use practices. The fentanyl test strips should not provide a false sense of security and should always be used in addition to safer drug use practices