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19,956 samples completed from 41 states. Last updated Tuesday, March 10, 2026.
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814282

From Los Angeles, California on December 19, 2025

Assumed to be fentanyl

2 major substances detected:

  • 4-ANPP
  • fentanyl

And we also found traces of phenethyl 4-ANPP. 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, 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: 9.24 = 4-ANPP

Peak: 10.46 = fentanyl

Method(s): GCMS

Record for Sample 814282 last updated March 2, 2026