Fentanyl Test Dip Cards: Quick, Accurate Results, Reliable Detection 5-Minute at Home Drug Test

10 ng/mL Cut-off Level - standard US cutoff level. Simply immerse the dipstick in urine or other water for 15 seconds and read the results at 5 minutes. Test Strips can be used for Testing for Fentanyl in Liquids, Pills and Powders. For testing a Powder, add 10 drops of water and mix well. For testing a Pill, crush/scrape the pill and add 10 drops of water and mix well. Simply dip the strip for 15 seconds in a Mixture/Liquid that is to be tested. Easy to Read: Positive is 1 Line in C Region only | Negative is 2 Lines (1 in C Region & 1 in T Region) | Invalid is No Lines or 1 in T Region (test again following instructions carefully)