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19,078 samples completed from 41 states. Last updated Monday, February 2, 2026.
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604248

From Pittsburgh, Pennsylvania on January 11, 2026

Assumed to be fentanyl

4 major substances detected:

  • diphenhydramine
  • lidocaine
  • 4-ANPP
  • fentanyl

But we found lots of contaminants too, with traces of caffeine + cocaine + tetracaine + ethyl 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.

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 = unknown color, powder

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

Major substances in graph:

Peak: 6.94 = diphenhydramine

Peak: 6.97 = lidocaine

Peak: 8.98 = 4-ANPP

Peak: 10.07 = fentanyl

Method(s): GCMS

Record for Sample 604248 last updated January 30, 2026