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19,078 samples completed from 41 states. Last updated Monday, February 2, 2026.
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814294

From Los Angeles, California on January 9, 2026

Assumed to be fentanyl, medetomidine

This is a messy brew of 5 major substances:

  • lidocaine
  • medetomidine
  • 1-phenethyl-4-propionyloxypiperidine
  • 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 = white, chunky, powder, rock

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 = lidocaine

Peak: 7.21 = medetomidine

Peak: 7.3 = 1-phenethyl-4-propionyloxypiperidine

Peak: 8.98 = 4-ANPP

Peak: 10.07 = fentanyl

Method(s): GCMS

Record for Sample 814294 last updated January 26, 2026