815470
From Bronx, New York on November 26, 2025
Assumed to be fentanyl, medetomidine
This is a messy brew of 8 major substances:
- caffeine
- diphenhydramine
- lidocaine
- ketamine
- medetomidine
- procaine
- tetramethyl-4-AP
- bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate
And we also found traces of cocaine + 4-ANPP + fentanyl. Trace substances in small quantities are usually harmless, but can sometimes cause health problems. Unexpected sensations may be due to these.
There were just traces of fentanyl. This could have been contamination, like if drugs were stored in old bags. But since fentanyl is so potent you should be prepared. Consider getting fentanyl test strips online or from a harm reduction program if you weren't expecting it. Carry naloxone (Narcan) to reverse overdoses. Even traces of fentanyl could be a problem if you don't use opioids regularly. 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, fine, powder
Need free supplies and advice to keep you safe? Find your nearest harm reduction program at harmreduction.org
Major substances in graph:
Peak: 6.85 = caffeine
Peak: 6.95 = diphenhydramine
Peak: 6.98 = lidocaine
Peak: 6.98 = ketamine
Peak: 7.22 = medetomidine
Peak: 7.54 = procaine
Peak: 8.19 = tetramethyl-4-AP
Peak: 11.96 = bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate
Method(s): GCMS
Record for Sample 815470 last updated December 15, 2025