It's easy to use and doesn't cost much to get the Rapid ResponseTM Fentanyl Test Strip (Liquid/Powder). It is a quick and accurate screening test that can find fentanyl at levels above 200 ng/mL. This drug test can give you correct and quick results in as little as one minute. Only for use in forensics. Not an IVD. Get more information about Lochness Medical - fentanyl test strips for sale visit https://www.lochnessmedica...