604123
From Pittsburgh, Pennsylvania on September 26, 2025
Assumed to be fentanyl
This is a messy brew of 5 major substances:
- caffeine
- medetomidine
- xylazine
- 4-ANPP
- fentanyl
And we also found traces of lidocaine + heroin + bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate. 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.
Xylazine causes serious skin problems. These can happen anywhere on the body and don't heal quickly. And, xylazine can come on stronger than traditional dope and knock you out, so be mindful of your surroundings. It's best to avoid dope with xylazine. You might need medical attention to prevent long-term damage.
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: 6.87 = caffeine
Peak: 7.242 = medetomidine
Peak: 7.42 = xylazine
Peak: 9.02 = 4-ANPP
Peak: 10.12 = fentanyl
Method(s): GCMS
Record for Sample 604123 last updated October 14, 2025