BTNX Fentanyl Test Strips have been used in Harm Reduction programmes throughout Canada and the USA for the past number of years, to determine the presence or absence of Fentanyl contamination in heroin.  These test strips have proven to be a very useful tool in helping People Who Use Drugs to make an informed decision about their drug.  Studies have shown that Users who have tested their drug with the BTNX Fentanyl Test Strip are likely to engage in safer behaviour such as using lower quantities or ensuring that they have a friend/buddy at hand when they use the drug.

Full details on how to use the BTNX Fentanyl Test Strips can be seen at the following link: