605739
From Pittsburgh, Pennsylvania on July 28, 2026
Assumed to be fentanyl
This is a messy brew of 6 major substances:
- caffeine
- lidocaine
- medetomidine
- tetracaine
- 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.
There are a lot of different substances in this sample. We don't know the harms that some of these can cause. Be careful and be prepared for unexpected reactions.
Looks = unknown color, powder
Need free supplies and advice to keep you safe? Find your nearest harm reduction program at harmreduction.org
Major substances in graph:
Peak: 6.96 = caffeine
Peak: 7.1 = lidocaine
Peak: 7.33 = medetomidine
Peak: 8.3 = tetracaine
Peak: 9.14 = 4-ANPP
Peak: 10.29 = fentanyl
Method(s): GCMS
Record for Sample 605739 last updated August 5, 2026