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Pack of 100
$225.00 per kit ($2.25 per strip)


Product Information
  • Product Code: NTZ-18S26-100
  • Quantity: 100
  • Sample: Liquid / Powder
  • Format: Strip
  • Time-to-Result: 60s+*
  • Storage Condition: 2-30°C; 36-86°F
  • Test Principle: Lateral Flow assay
  • Individually packaged test strips
  • Product insert
  • Results Interpretation Card


The Rapid Response Nitazene Test Strip (Liquid / Powder) is a rapid visual immunoassay for the qualitative, presumptive detection of Nitazene in suspicious substances (liquids or powders) at the cut-off concentration of 2000 ng/mL.

  • Enhanced User Guidance: Every pouch features a QR code linking it to the BTNX Harm
  • Reduction Resource Page - giving every user access to written and video instructions.
  • Straight forward Results Interpretation: Guide printed on the back of every pouch and T’s and C’s printed on each strip to indicate the orientation of the Test and Control lines.
  • Compact Design: Individually packaged strips facilitate easy distribution.
  • Quick Results: Obtain results as soon as 1 minute.*
  • Procedural Control: Every strip features a built-in procedural control mechanism. 
  • For forensic use only. Not an IVD.
Detected Compounds

The following tables list the concentrations of compounds (ng/mL) above which the Rapid Response™ Nitazene Test Strip (Liquid / Powder) identified positive

Nitazene related compounds

Concentration (ng/ml)





N-Pyrrolidono Etonitazene


Interpretation of test results are positive (one line), negative (two lines), invalid (no lines or no control line).

* A negative result can be interpreted as soon as both the test (T) and control (C) lines appear. A positive result can be interpreted once the control line has appeared and the background has cleared to white, typically by 60 seconds. Do not read results after 10 minutes.

About the Test


Nitazenes are a class of synthetic drugs that have gained attention in the United States and other countries in recent years. The prevalence of nitazenes in the illegal drug supply has been on the rise since 2019. Recent evidence suggests nitazenes may be more potent than fentanyl and may require a higher dose of naloxone in case of overdose.1 In the same study, several individuals who overdosed on nitazenes were unaware that their drugs contained it.1



1. JAMA Netw Open. 2023;6(8):e2331264.doi:10.1001/jamanetworkopen.2023.31264

  • The test device is NOT intended to determine the purity, composition, or if the substance being examined is safe to use.
  • A positive or negative test result is NOT an indication that the substance being examined is safe to use. Many factors come into play when examining the samples, including but not limited to mixture of multiple substances, solubility, and pH of the sample.
  • BTNX Inc. does not encourage the use, supply, or production of illegal drugs or controlled substances in any way. The device is intended for harm reduction purposes. Follow the advice of your local harm reduction or public health agency.
  • There is a possibility that technical or procedural errors as well as other substances and factors may interfere with the Rapid Response™ Nitazene Test Strip (Liquid / Powder) and cause false results.
  • A positive result indicates the presence of nitazene only and does not indicate quantity.
  • A negative result does not at any time rule out the presence of nitazene, as they may be present below the minimum detection level of the test.
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