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Writer & Editor
Chase
Chase is the writer and editor of TestSubstances. He built the site's testing guides and product reviews, tests reagent kits and fentanyl strips as part of the review process, and focuses on practical, non-judgmental harm reduction information.
Drug Checking
Hands-on reagent testing and fentanyl strip evaluation behind the product reviews.
Editorial
Writes and edits the buying guides and the harm reduction library.
Methodology
Grounded in published harm reduction research and lab protocols.
Want to contribute? We're always looking for harm reduction writers, researchers, and people with lived experience — see our pitch guidelines. Curious how the kits on this site get tested? Read our how we test methodology.