Harm Reduction


WARNING: THIS TEST DOES NOT EVALUATE DRUG SAFETY OR PURITY
Select your product below:
Xylazine Strip

Product Information
Product Code: XYL-18S2-100 & XYL-18S2-10Sample: Liquid / Powder
Format: Strip
Quantity: 10 or 100 Tests/Kit
Time to result: 60 seconds*
Storage Condition: 2-30°C/36-86°F
Test Principle: Lateral Flow Immunoassay
Contents
Test StripsProduct Insert
The Rapid ResponseTM Xylazine Test Strip (Liquid / Powder) is a rapid visual immunoassay for the qualitative, presumptive detection of xylazine in suspicious substances (liquids or powders) at the cut-off concentration of 1000 ng/mL.
Xylazine is a non-opioid tranquilizer used as a sedative, analgesic, and muscle relaxant in animals such as horses and cattle[1],[3]. In recent years, xylazine has emerged as an adulterant in recreational drugs such as heroin[2]. Combining xylazine with other drugs that cause central nervous system depression compounds the sedative effects and can increase the risk of overdose and death[2].
- Built in procedural control on every strip
- Results interpretation printed directly on the pouch
- Individually packed strips for easy distribution
* 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.

[1] GREENE, S.A. and THURMON, J.C. (1988), Xylazine – a review of its pharmacology and use in veterinary medicine. Journal of Veterinary Pharmacology and Therapeutics, 11: 295-313.
[2] Reyes, J.C., Negrón, J.L., Colón, H.M. et al. The Emerging of Xylazine as a New Drug of Abuse and its Health Consequences among Drug Users in Puerto Rico. J Urban Health 89, 519–526 (2012).
[3] Baselt RC. Disposition of Toxic Drugs and Chemicals in Man. 2nd ed. Davis: Biomedical Publications; 1982.
Disclaimers
- 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.
- Not for testing Cocaine.
- There is a possibility that technical or procedural errors as well as other substances and factors may interfere with the Rapid ResponseTM Xylazine Test Strip (Liquid / Powder) and cause false results.
- A positive result indicates the presence of xylazine only and does not indicate quantity.
- A negative result does not at any time rule out the presence of xylazine, as they may be present below the minimum detection level of the test.
Xylazine Kit

Product Information
Product Code: XYL-18S2-5KSample: Liquid / Powder
Format: Strip
Quantity: 5 Tests/Kit
Specificity: Xylazine
Accuracy: > 96.9%
Time to result: 60 seconds*
Storage Condition: 2-30°C/36-86°F
Test Principle: Lateral Flow Immunoassay
Contents
5 Individually packaged test strips5 Plastic test tubes with extraction buffer solution
5 Swabs
Tube stand
Result interpretation card
Product insert
The Rapid ResponseTM Xylazine Test Strip Kit (Liquid / Powder) is a rapid visual immunoassay for the qualitative, presumptive detection of xylazine in suspicious substances (liquids or powders) at the cut-off concentration of 1000 ng/mL. The kit contains additional materials required to test liquid or powder samples for the presence of xylazine, including: strips, collection swabs, and prefilled liquid buffer tubes. For forensic use only. Not an IVD.
Xylazine (colloquially known as tranq/tranq dope) is a non-opioid tranquilizer used as a sedative, analgesic, and muscle relaxant used in veterinary medicine for animals including horse and cattle[1],[3]. Recently, it has commonly been encountered in the recreational drug supply, most commonly in opioid “dope” (e.g., fentanyl, heroin)[2]. Combining xylazine with other drugs that cause central nervous system depression compounds the sedative effects and can increase the risk of overdose and death[2].
- Easy to use with detailed instructions for testing both liquid and powder samples
- Results interpretation printed on every pouch
- Built in procedural control on every strip
- Full kit with the materials required to test drug samples.
* 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.

[1] GREENE, S.A. and THURMON, J.C. (1988), Xylazine – a review of its pharmacology and use in veterinary medicine. Journal of Veterinary Pharmacology and Therapeutics, 11: 295-313.
[2] Reyes, J.C., Negrón, J.L., Colón, H.M. et al. The Emerging of Xylazine as a New Drug of Abuse and its Health Consequences among Drug Users in Puerto Rico. J Urban Health 89, 519–526 (2012).
[3] Baselt RC. Disposition of Toxic Drugs and Chemicals in Man. 2nd ed. Davis: Biomedical Publications; 1982.
Disclaimers
- 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.
- Not for testing Cocaine.
- There is a possibility that technical or procedural errors as well as other substances and factors may interfere with the Rapid ResponseTM Xylazine Test Strip (Liquid / Powder) and cause false results.
- A positive result indicates the presence of xylazine only and does not indicate quantity.
- A negative result does not at any time rule out the presence of xylazine, as they may be present below the minimum detection level of the test.
Fentanyl Strip

Product Information
Product Code: FYL-18S7-100 & FYL-18S7-10Sample: Liquid / Powder
Format: Strip
Quantity: 10 or 100 Tests/Kit
Specificity: Fentanyl
Accuracy: > 98%
Time to result: 60 seconds*
Storage Condition: 2-30°C/36-86°F
Test Principle: Lateral Flow Immunoassay
Contents
Test StripsProduct Insert
The Rapid ResponseTM Fentanyl (FYL) Test Strip is a lateral flow chromatographic immunoassay for the qualitative detection of Fentanyl in human urine at the cut-off concentration of 20 ng/mL and 200 ng/mL for Liquid/powder specimen.
It is specific for Fentanyl screening with no significant cross reactivity to other opiates, such as Morphine and Heroin.
Interpretation of test results are: positive (one line), negative (two lines), invalid (no lines or no control line).
Read the instructions for urine testing (English) here.
* 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.

Disclaimers
- 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 ResponseTM Fentanyl Test Strip (Urine) and cause false results.
- A positive result indicates the presence of fentanyl only and does not indicate quantity.
- A negative result does not at any time rule out the presence of fentanyl, as they may be present below the minimum detection level of the test.
Fentanyl Kit

Product Information
Product Code: FYL-18S7-5Sample: Liquid / Powder
Format: Strip
Quantity: 5 Tests/Kit
Specificity: Fentanyl
Accuracy: > 98%
Time to result: 5 minutes
Storage Condition: 2-30°C/36-86°F
Test Principle: Lateral Flow Immunoassay
Contents
Test StripsSwabs
Test Tubes
Extraction Buffers
Workstation
Product Insert
The Rapid ResponseTM Fentanyl (FYL) Forensic Test Kit is a lateral flow chromatographic immunoassay for the qualitative detection of Fentanyl in liquid and powder substances at the cut-off concentration of 200 ng/mL.
It is specific for Fentanyl screening with no significant cross reactivity to other opiates, such as Morphine and Heroin. The Rapid ResponseTM Fentanyl (FYL) Forensic Test Kit is able to detect Fentanyl and many other Fentanyl analogues such as Carfentanil, Acetyl Fentanyl, Butyryl Fentanyl, Remifentanil, Ocfentanil, Sufentanil, p-Fluoro Fentanyl, Furanyl Fentanyl, Valeryl Fentanyl, and 3-Methyl Fentanyl.
Interpretation of test results are: positive (one line), negative (two lines), invalid (no lines or no control line).

Benzodiazepine Strip

Product Information
Product Code: BZO-18S3-100Sample: Liquid / Powder
Format: Strip
Quantity: 100 Tests/Kit
Specificity: Benzodiazepine
Time to result: > 1 minute*
Storage Condition: 2-30°C/36-86°F
Test Principle: Lateral Flow Immunoassay
Contents
100 Individually packaged test strips1 Result interpretation card
1 Product insert
The Rapid ResponseTM Benzodiazepine Test Strip (Liquid / Powder) is a rapid visual immunoassay for the qualitative, presumptive detection of benzodiazepine in suspicious substances (liquids or powders) at the cut-off concentration of 300 ng/mL. Easy to use with detailed instructions for testing both liquid and powder samples.
- Results interpretation printed on every pouch
- Built-in procedural control on every strip
- Individually packaged test strips for easy storage and distribution
- Advanced colloidal gold technology
Benzodiazepines 300 related compounds |
---|
Bromazepam |
Diazepam |
Estazolam |
What are Benzos and what are they intended for in a medical setting?
Benzodiazepines are a controlled class of molecules which promote the binding of gamma-aminobutyric acid (GABA) to GABAA receptors in the body, resulting in reduced excitability of neurons and producing a calming effect on the brain.1 Due to the effects of benzodiazepines, they have been prescribed for a variety of uses, including to treat anxiety, insomnia, and muscle spasms.[1],[2] Xanax (alprazolam), Valium (diazepam), Halcion (triazolam), Ativan (lorazepam), and Klonopin (clonazepam) are currently among the most commonly prescribed pharmaceutical benzodiazepines.[3]What drugs are adulterated with benzos?
Benzodiazepines, like many other drugs, are misused, being sourced through both legal avenues as well as through the illicit drug supply.[2],[3] When sourced through legal avenues, users can be assured of drug purity and contents. However, illicit benzodiazepines are rarely pure, and often co-occur with other drug substances.[4-8] The most common and dangerous type of drugs co-identified with benzodiazepines are opioids, which include drugs like fentanyl and heroin.[7],[8] In fact, recent drug checking reports from Toronto and British Columbia have identified how prevalently the two drug classes are found together, with approximately 45-50% of all drugs expected to be of opioid origin also containing at least one benzodiazepine.[7],[9]What are the risks/outcomes of unknowingly taking benzos?
Benzodiazepine toxicity is often associated with central nervous system depression, such as slurred speech and loss of coordination; it is rare for vital processes, like respiration, to be severely depressed in cases of mono-substance benzodiazepine toxicity.[9] However, benzodiazepines are often used with other drugs,[7],[8] such as opioids, and presents a heightened toxic effect in these situations. In such cases, benzodiazepines have been observed to significantly compound respiratory depression, a leading cause of overdose.[2],[9]
[1] Griffin III, C. E. et al. The Ochsner Journal 2013.
[2] Schmitz, A. Ment Health Clin 2016.
[3] United States Drug Enforcement Administration. Drug Fact Sheet: Benzodiazepines 2020.
[4] Blakey, K. et al. Drug Test Anal 2021.
[5] Jurásek, B. et al. Int J Clin Pract. 2020.
[6] Tobias, S. et al. Drug Alc Dep 2020.
[9] British Columbia Centre on Substance Use Drug Checking in British Columbia 2023.
[10] Nation Library of Medicine Benzodiazepine Toxicity 2023.
[11] Canadian Centre on Substance Use and Addiction Prescription Opioids (Canadian Drug Summary) 2022.
Disclaimers
- 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 ResponseTM Benzodiazepine Test Strip (Liquid / Powder) and cause false results.
- A positive result indicates the presence of benzodiazepine only and does not indicate quantity.
- A negative result does not at any time rule out the presence of benzodiazepine, as they may be present below the minimum detection level of the test.
Benzodiazepine Kit
Harm Reduction in the News
Interior Health rolls out take-home strips to test opioids for fentanyl content
Interior Health (IH) says its latest tool for keeping drug users safe offers an answer to the stigma users still face. Check out https://drugchecking.ca/
Read MorePerspectives on rapid fentanyl test strips as a harm reduction practice among young adults who use drugs: a qualitative study
In 2016, drug overdose deaths exceeded 64,000 in the United States, driven by a sixfold increase in deaths attributable to illicitly manufactured fentanyl.
Read MoreInfographic: Fentanyl Test Strips
Fentanyl Test Strips: A potential intervention in the Opioid Crisis.
Read MoreTest Strips Could Help Stop the Fentanyl Overdose Crisis
A new study, authored by a group of scientists from Brown University, Boston University, and the University of British Columbia, provides support for the idea that test strips could be a potent tool in the fight against fentanyl.
Read MoreControversial tool emerges in opioid fight: fentanyl test strips
A controversial tool has emerged in the fight against opioid overdose deaths. It's a strip that allows people who use street drugs such as cocaine and heroin to test whether their drugs are laced with fentanyl.
Read MoreFentanyl test strips lead to more caution among illicit drug users
In 2016, drug overdose deaths exceeded 64,000 in the United States, driven by a sixfold increase in deaths attributable to illicitly manufactured fentanyl.
Read MoreStudy finds fentanyl in nearly all heroin sold in Vancouver
A recent study led by the B.C. Centre on Substance Abuse (BCCSU) has revealed that nearly all substances labeled as heroin sold in Vancouver contain the deadly synthetic opioid fentanyl.
Read MoreCity to study use of fentanyl-detecting test strips by distributing them in exchange vans
City to study use of fentanyl-detecting test strips by distributing them in exchange vans.
Read MoreNearly all drugs sold as heroin in Vancouver contain fentanyl, study finds
More than 80 per cent of drugs sold as heroin on the streets of Vancouver don’t contain any heroin at all, while nearly all of them contain the powerful synthetic opioid fentanyl. Full study to be posted in September.
Read MoreBurlington third U.S. city to offer free fentanyl test strips
A Vermont health care center has announced it will start giving away free test strips to determine if a drug contains fentanyl.
Read MoreHoward Center to begin distributing fentanyl test kits
Fentanyl is to blame for 146 deaths in Vermont since 2016, when it overtook heroin and prescription painkillers as the most deadly opioid in the state. The potent synthetic has already killed 30 people in Vermont in 2018, more than heroin and prescription opioids combined, according to state data.
Read MoreFentanyl testing kits could save lives, Brown researchers say
In addition to verifying that the BTNX Rapid Response Single Drug Test Strip accurately detected the presence of fentanyl in street drug samples, the researchers then surveyed drug users to learn how receptive they would be to use of the test.
Read MoreThe $1 Tool That Might Curb the Overdose Epidemic
Fentanyl, which is 50 times as potent as heroin, laces many batches of heroin and cocaine, and it is now involved in at least half of all opioid overdose deaths. More than 70,000 people died of drug overdoses last year—the equivalent of about three 747 plane crashes each week.
Read More2,000% rise in street drug samples testing positive for fentanyl
The number of positive tests for fentanyl in samples of heroin seized by law enforcement agencies across Canada has grown from less than one per cent in 2012 to more than 60 per cent so far this year, exclusive data obtained by CBC News has revealed.
Read MoreUniversities should provide fentanyl testing strips
Data collected from safe injection facilities in Canada indicate there has been a 2,000 percent rise in street drugs testing positive for fentanyl since 2012.
Read MoreAmid overdose epidemic, researchers say users should be allowed to test their drugs for fentanyl
Seventy percent also said they would modify their behavior if they knew their drugs contained fentanyl, including avoiding the drugs, using them more slowly, or using them with others who have the antioverdose medication naloxone.
Read MoreOverdose Prevention
Harm reduction is a practical approach to keeping people safe. The approach aims to protect people who are engaged in higher-risk behaviour while at the same time, supporting them towards treatment and recovery.
Read MoreCalifornia Experiments with Distributing Fentanyl Tests
The strips developed by the biotechnology company BTNX based in Toronto, Canada, are only sold to governments and harm reduction programs. CEO and founder Iqbal Sunderani said the state of California is his biggest customer.
Read MoreCalifornia is Now Paying for People to Test Their Drugs for Fentanyl
California is paving the way!
Read MoreUnfiltered: 'Nobody deserves to die because they use drugs'
According to the National Center for Health Statistics at the Centers for Disease Control, there were an estimated 64,000 drug overdose deaths in 2016 — and more than 20,000 were related to fentanyl, a type of opioid that is up to 100 times stronger than morphine.
Read MoreSan Francisco's Newest Tool to Prevent Opioid Overdoses Tests Drugs, Starts Conversations
While California has made some positive strides in the fight against opioids (the latest data show that prescriptions in the state are down), deaths from one particularly powerful opioid, fentanyl, are up.
Read MoreA Test Strip That Could Save Lives
"If you had a little bit of the drug you could pop in here...you would add a little bit of water… and then you use this test strip, hold it in, and if there was fentanyl present, two red lines or pink lines would appear," says Mark Townsend.
Read MoreHow Safe Injection Facilities Could Reduce Fentanyl Overdoses
In one study of 242 heroin users in British Columbia, 70 tested positive for fentanyl—and more than 50 of those hadn’t known they were using it.
Read MoreFentanyl Is A Lethal Weapon, But $1 Test Strips Offer A Defense
“We’re not trying to help people use drugs, we’re trying to help people stay alive,” said Lisa Fair, the Associate Director of HIV Prevention and Outreach at Circle Health Services.
Read MoreRI Governor: Drug Overdose Deaths Decline, Signaling Progress
RI Governor: Drug Overdose Deaths Decline, Signaling Progress.
Read MoreNew Tool To Combat Overdose Deaths: Fentanyl Test Strips
A new study co-led by a Rhode Island epidemiologist found that a simple drug testing strip -- similar to a home pregnancy test -- accurately detected the potentially deadly opioid fentanyl in street drug samples.
Read MoreReport proposes fentanyl test strips to prevent overdoses
A thin test strip -- similar to a pregnancy test -- can detect whether a street drug contains the dangerous opioid fentanyl, according to a new report.
Read MoreCalifornia To Drug Users: We’ll Pay For You To Test Your Dope
Michael Marquesen first noticed about a year ago that fentanyl, a dangerous synthetic opioid, had hit the streets of Los Angeles. People suddenly started overdosing after they shot up a new white powder that dealers promised would give them a powerful high.
Read MoreOpioid overdose deaths reach record level in Canada
A record number of Canadians died of opioid overdoses in 2017, according to figures released by Health Canada today.
Read MoreNational report: Apparent opioid-related deaths in Canada (released March 2018)
National report: Apparent opioid-related deaths in Canada (released March 2018).
Read MoreThese strips detect a deadly drug. But users still shoot up
These strips detect a deadly drug. But users still shoot up.
Read MoreFentanyl test strips need to get into the hands of users on the streets, says public health officer
More than 1,900 people have died of illicit drug overdoses in B.C. since the province declared a public health emergency nearly two years ago.
Read MoreCheap, easy test to spot fentanyl in opioids could stem fatal overdoses. There’s just one problem.
A fast, cheap test to see if street drugs contain fentanyl is gaining favor with researchers and drug outreach workers as a breakthrough in preventing overdoses and slowing the nation’s growing death toll from opioid abuse.
Read MoreFighting Fentanyl: The Practitioners
Nearly two-thirds of people who use drugs surveyed for this project had experienced an opioid overdose at least once, and 8 in 10 attributed their last overdose to fentanyl. Forty-two percent had witnessed someone die of an overdose.
Watch VideoFighting Fentanyl: The Practitioners
Health departments and community-based organizations across the country have been stepping up to respond to the opioid crisis. This project aimed to identify a potential tool they can use to prevent overdose deaths and engage with people who use opioids to help them move toward addiction treatment and other services.
Watch VideoFighting Fentanyl: The Researchers
Dr. Susan Sherman and Dr. Traci Green have long focused on improving the health of marginalized populations, including people with substance use disorders, sex workers and people with HIV. For this project, they wanted to both test a solution and begin to determine how well it might work in real-world settings.
Watch VideoFentanyl test strips floated as way to fight overdoses in Dayton area
A local woman wants more people in the Dayton area to know about low-price test strips that detect fentanyl in street drugs, and proponents say could help opioid abusers avoid fatal overdoses.
Read More$1 Fentanyl Test Strip Could Be a Major Weapon against Opioid ODs
No drug has fueled the current spike in overdose deaths more than fentanyl. The synthetic opioid claimed two thirds of the record 64,000 such fatalities in the U.S. in 2016.
Read MoreAn Off-Label Use of Cheap Strips – to Test for Deadly Contaminants in Drugs – Gets the Backing of Science
Research is beginning to show that cheap strips can accurately detect deadly fentanyl, and encourages people to get high more cautiously.
It costs Jess Tilley $1 to purchase a fentanyl test strip—a small sum, until you consider that she's buying them by the hundreds.
Since the fall of 2016, Tilley has been paying for these strips out of pocket and distributing them for free to drug users in western Massachusetts. It's a costly exercise, but it fits in perfectly with Tilley's mission as the founder of the New England User's Union: "We wanted to come together to advocate for all drug users."
Read More