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Fent Test Strip

4.57 out of 5 based on 7 customer ratings
(7 customer reviews)

About Fentanyl Testing Strips

When used correctly, WIM Scientific Laboratories fentanyl test strips can detect fentanyl and many of its known analogs, including carfentanil. However, they can’t detect them all. A negative result does not guarantee your test samples are free from all fentanyl analogs.

Your Fentanyl Test Strip Contains the following:

  • 1 Fentanyl Test Strip
  • Instructions, safe handling, promotional items, storage and most importantly reactions charts.
  • Our contact info in case you need us 24/7 for anything, have any issues, comments, questions, concerns.

Shipping Information:

All orders ship same day if placed before 12PM CST. Delivery is 2-5 days depending on location. Quantities of 10 or more ship via USPS Ground Advantage with Tracking. Single and 5-Pack Fentanyl Test strips ship via USPS First Class Mail without tracking unless bundled with another testing kit.

NOTE: This product does not ship to the following states: Idaho, Indiana, Iowa, North Dakota and Texas

7 reviews for Fent Test Strip

  1. 3 out of 5

    Cam (verified owner):

    Haven’t tested them yet, but it makes no sense that they don’t come with any instructions. I’ll have to look them up and write it down for later

    • WIM Scientific Laboratories (verified owner):

      Orders ship with a post card, you must scan the QR code on the card to access the instructions. Give us a call if you need more help, thanks!

  2. 4 out of 5


    Yeah I ordered 3 of these & it didn’t come with any instructions or charts. It came with a bag with 3 straps & a silica pack. Came with a little bracelet, & a little sticker. That pretty much it. Woulda been nice to have the chart & instructions tho! Maybe next time…

  3. 5 out of 5

    Alias Joe Doe (verified owner):

    works great. tested one control (tap water) , one prescription benzodiazepine. both showed negative results as expected. I then tested a substance confirmed to be fentanyl, tested positive as expected. works great, reliable and cheap. This is a MUST for any substance user.

  4. 5 out of 5

    Hector M.:

    Good product, scan the QR code they give you for the instructions. Fairly easy to use, just do not dilute the substance too much, I’ve already received 2 false positives. Must re-test.

  5. 5 out of 5

    Someone with Common Sense:

    People complaining about no instructions , did taking illicit drugs come with instructions? the instructions are on the QR code , and on this site you ordered the product from. You gave a very good product 3 stars for your own lack of common sense. I personally have used several reagents from this site and have not had great results.

  6. 5 out of 5

    Someone with common sense:

    Edit my precious comment to have had great results pls. Sorry

  7. 5 out of 5


    Instructions for everything are on the download page, after finding those everything works as expected. Super simple to use

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Our test strips have been verified to positively identify the following drugs:

  • Fentanyl
  • Butyryl-fentanyl
  • 3-Methylfentanyl
  • Sufentanil
  • Cyclopropylfentanyl
  • Acetylfentanyl
  • Tetrahydrofuran fentanyl
  • Carfentanil
  • Acrylfentanyl
  • Flouroisobutyryfentanyl
  • Furanylfentanyl
  • p-Flourofentanyl
  • β-OH-thiofentanyl

When fentanyl (or its analogs) are mixed with heroin, cocaine or other drugs, it is never mixed evenly. Powder from one side of a container or bag may contain no fentanyl at all, yet powder from the other side may contain a lethal dose. This is why it is imperative to test all of the substance if you intend to consume!

Testing Injected Substances

If you inject heroin or other drugs, you must test every time you inject. The preferred method is to test the residue from your spoon or cooker.

  1.  After preparing your shot, set the needle aside and wait to inject.
  2. Add about 1 milliliter (about 1/4 of a teaspoon) of clean water into the spoon or cooking utensil.
  3. Hold the blue end of the test strip and insert the other end into the liquid.
  4. Allow the liquid to move up the strip into the test area. (This takes about half a minute)
  5. Place the strip down on a level surface and wait two minutes. Download our reaction chart for interpreting results.

Unlike other Fentanyl Test Strip Providers we provide you with everything you need to identify illicit substances and compounds.

WIM Scientific Laboratories makes use of superior laboratory supplies and extensive attention to detail, ensuring that your test strip will react in a dependable and decisive way for each test.

All WIM Scientific Lab analytical tests are made to order and not stored for long periods in third party distribution centers.

Additional information


1 Fent Strip, 5 Fent Strips, 10 Fent Strips, 25 Fent Strips, 50 Fent Strips, 100 Fent Strips