A simple and affordable dipstick test is the Rapid ResponseTM Fentanyl Test Strip (Liquid/Powder). At cut-off levels greater than 200 ng/mL, it is a quick and accurate qualitative screening test for fentanyl. In as little as one minute, this drug test can deliver precise and prompt findings. Only for forensic purposes. Not an IVD. For more information about Lochness Medical - fentanyl test visit https://www.lochnessmedical.co....m/Product/fentanyl-t