604121
From Pittsburgh, Pennsylvania on September 26, 2025
Assumed to be fentanyl
This is a messy brew of 6 major substances:
- medetomidine
- procaine
- tetracaine
- 4-ANPP
- fentanyl
- bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate
And we also found traces of phenacetin + lidocaine. Trace substances in small quantities are usually harmless, but can sometimes cause health problems. Unexpected sensations may be due to these.
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 = white, powder
Need free supplies and advice to keep you safe? Find your nearest harm reduction program at harmreduction.org
Major substances in graph:
Peak: 7.25 = medetomidine
Peak: 7.57 = procaine
Peak: 8.22 = tetracaine
Peak: 9.03 = 4-ANPP
Peak: 10.12 = fentanyl
Peak: 12.03 = bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate
Method(s): GCMS
Record for Sample 604121 last updated October 14, 2025