818763
From Seattle, Washington on May 25, 2026
Assumed to be fentanyl
4 major substances detected:
- 1-phenethyl-4-propionyloxypiperidine
- 4-ANPP
- ethyl 4-ANPP
- fentanyl
And we also found traces of medetomidine. 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, dull, chunky, powder
Need free supplies and advice to keep you safe? Find your nearest harm reduction program at harmreduction.org
Major substances in graph:
Peak: 7.45 = 1-phenethyl-4-propionyloxypiperidine
Peak: 9.17 = 4-ANPP
Peak: 9.32 = ethyl 4-ANPP
Peak: 10.36 = fentanyl
Method(s): GCMS
Record for Sample 818763 last updated June 11, 2026