The Rapid Response Fentanyl (FYL) Forensic Test Strip is a lateral flow chromatographic immunoassay for the qualitative detection of Fentanyl in liquid and powder substances at the cut-off concentration of 200 ng/mL.  Also available in a kit, results are presented 5 minutes after the test has been completed!

It is specific for Fentanyl screening with no significant cross reactivity to other opiates, such as Morphine and Heroin. The Rapid ResponseTM Fentanyl (FYL) Forensic Test Kit is able to detect Fentanyl and many other Fentanyl analogues such as Carfentanil, Acetyl Fentanyl, Butyryl Fentanyl, Remifentanil, Ocfentanil, Sufentanil, p-Fluoro Fentanyl, Furanyl Fentanyl, Valeryl Fentanyl, and 3-Methyl Fentanyl. 

Interpretation of test results are: positive (one line), negative (two lines), invalid (no lines or no control line).