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16,761 samples completed from 41 states. Last updated Friday, October 17, 2025.
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604101

From Pittsburgh, Pennsylvania on September 15, 2025

Assumed to be fentanyl

4 major substances detected:

  • medetomidine
  • 4-ANPP
  • fentanyl
  • quinine

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, powder

Need free supplies and advice to keep you safe? Find your nearest harm reduction program at harmreduction.org

Major substances in graph:

Peak: 7.24 = medetomidine

Peak: 9.02 = 4-ANPP

Peak: 10.13 = fentanyl

Peak: 10.67 = quinine

Method(s): GCMS

Record for Sample 604101 last updated October 14, 2025