Fentanyl Test Strip for Liquid and Powder Substances - 10 Test Strips Per Pack - Rapid Response

Easy to use seems accurate functions as described.

I like this product because it identifys fentanyl but with almost everything having fentanyl in it it would be great if it detected if the levels are high enough to take u out of here. Unfortunately it's substances with fentanyl in it that will not give you fentanyl poisoning. I wish they'd create a test that test to let you know if it's a safe amount. Overall still a great test. BEWARE THE INSTRUCTIONS ON THE BACK CAN BE CONFUSING! 1 LINE ANYWHERE MEANS POSITIVE TWO LINES EQUAL NEGATIVE!

Easy to use. Great to have on hand,

It's easy to use as long as you follow the directions. I wanted to check for Fentanyl due to rumors I've heard. Sadly, the rumors are true. Please warn people, encourage them to test their products. Maybe you will save a life. Who is bringing this crap into our country? China, Mexico and our Homeland Security via the open border. God help us all.

I'm just glad to be able to test things to make sure that fentanyl is not in other substances that are out there. That my kids can get ahold of and anybody really

Do not buy these , u have to use a lot of product and still the lines are so faint

Simple and easy instructions. A life saver at the end of the day.

Worked well for me