24,093 samples completed from 42 states. Last updated Wednesday, September 9, 2026.
819297
From Denver, Colorado on August 4, 2026
Assumed to be fentanyl
3 major substances detected:
- methamphetamine
- 4-ANPP
- fentanyl
Fentanyl is potent and the amount changes by batch. If you weren't expecting it, consider getting test strips online or from a harm reduction program. Carry naloxone (Narcan) to reverse overdoses. Don't use alone so someone can help if you go out.
Looks = white, fine, powder, crystals
Need free supplies and advice to keep you safe? Find your nearest harm reduction program at harmreduction.org
Major substances in graph:
Peak: 3.97 = methamphetamine
Peak: 9.14 = 4-ANPP
Peak: 10.29 = fentanyl
Method(s): GCMS
Record for Sample 819297 last updated August 12, 2026