Fentanyl Test Strips
Fentanyl Test Strips
Fentanyl test strips (FTS) are a low-cost harm reduction tool that can be used to prevent overdoses in combination with other strategies. FTS are small strips of paper that can detect the presence of fentanyl in different kinds of drugs (cocaine, methamphetamine, heroin, etc.) and drug forms (pills, powder, and injectables).
Where to get FTS in Marin County
Find Free Test Strips at the Following Locations
For Schools and Non-profit Organizations
Eligible organizations can order larger quantities of FTS through the California Department of Health Care Services (DHCS) Naloxone Distribution Project (NDP).
For Private Businesses
Companies seeking FTS for employees or patrons of their business can order larger quantities of FTS on the Dostest website.
How to Use Fentanyl Test Strips*
* FTS may not work in all cases
- FTS do not differentiate between fentanyl and fentanyl analogs and may not identify the presence of some analogs (e.g., alfentanil or carfentanil).
- FTS may not work as well in the presence of large amounts of methamphetamine, MDMA, or diphenhydramine.
- FTS can’t tell you how much fentanyl is in a sample, just if the sample contains fentanyl.

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