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19,078 samples completed from 41 states. Last updated Monday, February 2, 2026.
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814283

From Los Angeles, California on December 15, 2025

Assumed to be nitazene

2 major substances detected:

  • 4-ANPP
  • fentanyl

And we also found traces of medetomidine + cocaine. 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.

Looks = white, hard, 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: 8.99 = 4-ANPP

Peak: 10.11 = fentanyl

Method(s): GCMS

Record for Sample 814283 last updated January 23, 2026