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Fentanyl test strips: where to get & how to use?

Medically reviewed by Leigh Ann Anderson, PharmD. Last updated on Oct 23, 2024.

Official Answer by Drugs.com

Key Points

How do I use fentanyl test strips?

If your strips come with specific directions, follow those directions exactly.

The general directions for BTNX fentanyl test strips are:

Even if your drugs test negative for fentanyl, use caution and follow the harm reduction steps (see below) if you are using drugs for recreational purposes.

What are fentanyl test strips?

Fentanyl test strips are an important tool to help prevent a drug overdose from illegally-made fentanyl, a potent and often deadly opioid. Fentanyl test strips can be used to determine if drugs have been mixed or cut with fentanyl. They can be used to sample street drugs like heroin, methamphetamine, cocaine, and illegally obtained prescription pills. The strips give those who use illegal drugs a way to determine if fentanyl is present in their drug supply and to help reduce the risk of an overdose.

Legal fentanyl is a synthetic prescription opioid developed in the 1960s and is used to treat severe pain such as breakthrough cancer pain in patients who are opioid-tolerant.

Illegally manufactured fentanyl is fueling the increase in drug overdoses in the U.S. It is often contained in illicit drugs without the user’s knowledge. It may be laced into other illegal street drugs, such as cocaine, heroin, fake opioid pills, or methamphetamine (“meth”). It is relatively cheap to make and allows an illicit drug manufacturer to stretch their product, make it more powerful and addictive, and gain more money for themselves.

The risk is especially high among persons who are not tolerant to the drugs effects (opioid-naïve) and may not be aware that the drugs they use contain fentanyl. Because fentanyl is so potent, its use in people who are naïve to fentanyl use can quickly lead to overdose and death.

What do fentanyl test strip studies say?

Studies have shown that fentanyl test strips can increase awareness and lead to safety precautions to help prevent an overdose.

There are a few drawbacks to fentanyl test strips. False positives may occur, the strips do not tell you how much fentanyl is present or how potent it is, and not all states consider the strips legal.

The test strips are also surrounded by controversy: some worry these tests create a false sense of security or justify the use of illegal drugs. It also assumes the user is acting rationally and will avoid use of a drug if it is detected, but this may not always be the case. However, fentanyl tests strips should be considered an important tool in opioid harm reduction.

Related questions

Are fentanyl test strips legal?

Not in all U.S. states. Based on previous legislation in some states, fentanyl test strips are classified as drug paraphernalia and are considered illegal.

Where to buy fentanyl test strips?

Some online retailers sell fentanyl test strips, and certain states such as Ohio are now providing test strips in vending machines for easier access, sometimes along with naloxone. When buying online, use extreme caution to be sure the tests are valid.

Contact the syringe services program or Dept. of Health and Human Services in your state. These groups may be able to provide test strips free of charge, or know where you can get them.

How can I protect myself from a drug overdose?

For more information, you can contact find evidence-based treatment and service options near you by visiting https://findtreatment.gov or by calling the 24/7, National Helpline at 800-662-HELP (4357).

This is not all the information you need to know about fentanyl test strips for safe and effective use and does not take the place of your healthcare provider's advice. Review and follow the full test strip information before use, as directions may vary among tests. Discuss this information and any questions you have with your doctor or other health care provider.

References

Read next

Why is fentanyl so dangerous?

When illegally used fentanyl is abused or taken in an overdose, this opioid can quickly be fatal because it is so potent and people are not used to its effects. Fentanyl is often laced into street drugs and consumed unknowingly by users, leading to death. Also, when it's used in combination with other central nervous system depressants like opioids, alcohol or benzodiazepines, the risk of overdose and death multiplies. Continue reading

What are the symptoms of a fentanyl overdose?

A fentanyl overdose may result in signs and symptoms such as:

  • stupor (dazed or nearly unconscious)
  • coma (cannot be awakened, unable to speak)
  • pupil constriction
  • slowed or absent breathing (respiratory depression or failure)
  • cyanosis (bluish or purplish tint to the skin, lips or fingernails due to low oxygen levels)
  • vomiting
  • heartbeat slows or stops
  • death
Continue reading

How does fentanyl compare to heroin or other opiates?

Fentanyl is an extremely potent, synthetic (man-made) opioid. It is about 50 times more potent than heroin and 100 times more potent than morphine. In contrast, heroin is 2 to 3 times more powerful than morphine. Fentanyl is a legally prescribed drug for pain in the US and is classified as Schedule II controlled substance when used for legitimate purposes. Heroin is illegal in the U.S. and is classified as a Schedule I controlled substance. Continue reading

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