How to Test for Fentanyl – Fentkits

HOW TO TEST FOR FENTANYL

PURCHASE FENTKITS HERE

Fentanyl and fentanyl analogs are highly potent synthetic opioids a hundred times stronger than heroin or more. They are largely responsible for the dramatic increase in drug overdoses worldwide. Fentanyl overdoses have been linked to counterfeit pharmaceutical pills (painkillers like Vicodin or Percocet and benzodiazepines like Xanax or Valium among others) that contain fentanyl, as well as fentanyl-laced cocaine, heroin, and MOST other substances.

If you did not obtain the substance from YOUR PHARMACIST, then it MUST be tested for fentanyl at this point.

IMPORTANT: When fentanyl (or a fentanyl analog) is mixed with heroin, cocaine or other substances, it is *never* mixed evenly. Powder from one side of a baggie may contain no fentanyl at all, yet powder from the other side may contain a fatal dose. It is important to test every bit of the substance you intend to consume, before you consume it.

Please use fentanyl test strips along with our spot kits or separation kits in order to thoroughly evaluate your sample. Fentkits are specifically designed to detect fentanyl and its analogs. They cannot detect other dangerous adulterants.

ABOUT OUR FENTANYL TESTING STRIPS

Our fentanyl testing strips have been thoroughly evaluated by a team of researchers at the University of California San Francisco as well as at our own laboratory in the European Union. They are capable of detecting incredibly small amounts, even traces, of fentanyl along with many of its known analogs – including acetyl-fentanyl and carfentanil.

These kits (along with every other kit on the market) have limitations. There is no method available today capable of detecting every fentanyl analog. The version available on this site covers the most common and dangerous versions – more than any other on the market.

Our strips have been verified to positively identify the following:

Fentanyl — 200 ng/
Carfentanil — 1,000 ng/ml
Butyryl Fentanyl — 700 ng/ml
p-Fluoro Fentanyl — 200 ng/ml
Acetyl Fentanyl — 150 ng/ml
Furanyl Fentanyl — 500 ng/ml
Valeryl Fentanyl  — 700 ng/ml
Ocfentanil  — 250 ng/ml
3-Methyl Fentanyl  — 500 ng/ml
Remifentanil  — 70,000 ng/ml
Sufentanil  — 100,000 ng/ml

CAUTION! Fentanyl test strips from other sources may not detect all necessary fentanyl analogs. Some versions (mostly of Chinese origin) may not function at all. Five different strips from three different manufacturers have been evaluated by UCSF. Four did not detect carfentanil and one set of strips from a Chinese manufacturer did not work at all. DO NOT TRUST TEST STRIPS THAT DO NOT CONTAIN BOTH ANTIBODIES. THIS IS INCREDIBLY IMPORTANT.

FENTKIT INSTRUCTIONS

METHOD ONE

Testing everything you intend to consume
(MOST ACCURATE METHOD)

We understand that this is not always practical, but the BEST method for testing non-injected substances—including powders, crystalline or tablets—is to test every bit of the substance you intend to consume. This requires dissolving the whole sample in water first. You can still consume the sample by drinking the water or you can let the water evaporate and consume the substance later. It is also possible to put your sample in a food dehydrator to evaporate the water much more quickly – within an hour or even less. Evaporation without a dehydrator could take anywhere from a few hours to a few days, depending on heat and humidity, but will not affect your substance.

 

 

  1. Place all of the drug you intend to consume into a test tube, glass, or ceramic cup. (crushed into a powder.)
  2. If you are testing methamphetamine, add one teaspoon of water (about 5ml) for each 10mg of crystal or powder you are testing (a little less than a “bump”.) If you are testing cocaine, MDMA, or any drug other than meth, add one teaspoon of water per 50mg of crystal or powder (this amount is about half of a normal dose of MDMA). This will help you avoid possible false positives for meth and MDMA while still allowing for the detection of fentanyl and carfentanil.
  3. Stir the contents until it is thoroughly dissolved. (Binder materials in tablets may not dissolve.)
  4. Use a test strip (see “HOW TO USE TEST STRIPS” below)

 

METHOD TWO

Testing the residue inside your baggie
(SECOND MOST ACCURATE METHOD)

While the best method is to test every bit of your sample that you intend to consume as described above, we understand that is not always possible. This method has a higher chance of producing false negatives.

 

 

  1. Empty the powder or crystals inside your baggie into another container. If you are testing a solid sample, grind it or crush it up first before emptying the baggie to evenly distribute 
  2. Put half a teaspoon (about 2.5ml) of water into the baggie and swish it around to dissolve the residue. If you are testing meth, you may need to add more water depending on how much residue is stuck to the inside of the baggie. Meth needs to be diluted down to at least 2mg/ml to avoid false positives.
  3. Use a test strip (see “HOW TO USE TEST STRIPS” below.)

METHOD THREE

Testing a small amount of your substance
(LEAST ACCURATE METHOD)

*This method is for use only when the above options are not possible.
They are much more accurate.*

  1.   Place the drug you intend to consume into a test tube, glass, or ceramic cup. (crushed into a powder.)
  2.   If you are testing methamphetamine, add one teaspoon of water (about 5ml) for each 10mg of crystal or powder you are testing (a little less than a “bump”.) If you are testing cocaine, MDMA, or any drug other than meth, add one teaspoon of water per 50mg of crystal or powder (this amount is about half of a normal dose of MDMA). This will help you avoid possible false positives for meth and MDMA while still allowing for the detection of fentanyl and carfentanil.
  3. Use a test strip (see “HOW TO USE TEST STRIPS” below.)

 

METHOD FOUR

Testing heroin and other injected substances
(FOR INJECTED SUBSTANCES ONLY)

If you inject, you need to test every time you do so. The best method is to test the residue from your spoon or cooker. After preparing your shot, set the needle aside and wait to inject.

 

 

  1. Add a small amount of clean water into the spoon or cooker. (1 millimeter or 1/4 teaspoon is enough.)
  2. Use the bottom end of a clean needle to swish the water around inside the spoon or cooker
  3.   Use a test strip (see “HOW TO USE TEST STRIPS” below.) 

USING THE STRIPS ONCE YOUR SAMPLE IS DISSOLVED

  1. Hold the blue end of the test strip and insert the other end into the liquid, no higher than the blue line.

  2. Allow the liquid to travel up the strip into the test area. (This takes less than 30 seconds.)

  3. Set the strip down on a flat surface and wait about two minutes. See “Interpreting Results” below.

INTERPRETING THE TEST RESULTS

ONE RED LINE on top is POSITIVE for the presence of fentanyl or one of its analogs.

TWO RED LINES is a NEGATIVE for the presence of fentanyl.

NO RED LINES (or one red line on the bottom) means the test is INVALID. (The liquid did not go far enough up the strip.)

*ANY SECOND LINE MEANS THE TEST IS NEGATIVE*

A POSITIVE REACTION WHEN TESTING COCAINE COULD INDICATE THE PRESENCE OF EITHER FENTANYL OR LIDOCAINE. Please assume any positive test contains fentanyl and encourage others to stop using lidocaine as a cutting agent.

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