Harm reduction nonprofit, ranked
5 products across 1 brand, ordered by how many of each vendor's claims we could confirm ourselves. It is not a claim that any product works.
This category is different from every other one on this site: nothing here is a supplement, and nothing here is meant to be ingested. It covers drug-checking hardware, fentanyl and xylazine test strips, reagent identification kits and related supplies, currently represented by DanceSafe, a US harm-reduction nonprofit.
The ranking sorts by pricing transparency and by what we could confirm about manufacturing and product claims directly from the vendor's own documentation. For the full walkthrough of how to actually use a test strip correctly, including the sampling mistakes that cause false negatives, see fentanyl test strips: how to use them.
Fentanyl Test Strips (100-strip box)
Immunoassay test strip
Fentanyl Test Strip (single strip)
Immunoassay test strip
Xylazine Test Strips (100-strip box)
Immunoassay test strip
Complete Set of All 9 Reagents
Reagent drug-checking kit
Standard Set of 6 Reagents
Reagent drug-checking kit
Common questions
In most US states, yes, following widespread exemptions from drug paraphernalia laws passed in recent years. A small number of states haven't passed that exemption. Check your specific state's current law before ordering.