5 Pack - Fen Strips for Rapid Detection, Urinary Drug Testing, One-Step Quick Results, Easy-Read Urine Drug Test Strips, Synthetic OPI Detection Drug Testing Strip,Drug Test Strips, Fen 20 ng/mL

Easy to use.it gives clear directions to make a solution to test pills or other suspected substances. It displays your results in 5 minutes time or less. It worked in 30 seconds when I tested it out.They are completely accurate, and I have tested them on substances that came positive, and I knew they were positive before testing just to see if they were accurate.So this is perfect for anyone with suspicions or concerns.Even people trying to get off of it or whatever. So easily worth it!

Product shipped fast and worked as it says. I didn't care for how faint the control line shows when a negative result shows but even a faint line means negative. I was having issues with testing positive, it took 18 days before I tested negative and I'm a 48 year old male large man so I'm sure I have a slow metabolism but I even tested a new bottled water and the control line was faint so don't get discouraged over a faint line.

They are used to test for drugs and they do work well. They are very clear

They did they job

What a shame I had to have these sent to a family member in a different state because they aren’t allowed in some states. Why wouldn’t you want to save everyone from the dangers of Fentanyl. But they were quick and easy to use.

These were easy enough to use which was excellent but received a positive on another test kit so🤷🏻‍♀️ Not entirely sure of the accuracy quite honestly

I want to say I run a treatment center and I've used several types of test kits test strips all kinds of stuff I'm pretty impressed with the fentanyl tests I like to specifically test for that now because it's in everything that the kids are doing today and the range of people I have here anywhere from 19 to 45 and that's the new drug on the market that our borders are letting

I got quick results that came out like they should have. I would buy again if needed but that should never happen again.