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18,182 samples completed from 41 states. Last updated Friday, December 19, 2025.
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815459

From Bronx, New York on November 5, 2025

Assumed to be fentanyl

3 major substances detected:

  • caffeine
  • procaine
  • cocaine

And we also found traces of 4-ANPP + fentanyl + medetomidine. Trace substances in small quantities are usually harmless, but can sometimes cause health problems. Unexpected sensations may be due to these.

There were just traces of fentanyl. This could have been contamination, like if drugs were stored in old bags. But since fentanyl is so potent you should be prepared. Consider getting fentanyl test strips online or from a harm reduction program if you weren't expecting it. Carry naloxone (Narcan) to reverse overdoses. Even traces of fentanyl could be a problem if you don't use opioids regularly. Don't use alone so someone can help if you go out.

Looks = off-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: 6.85 = caffeine

Peak: 7.56 = procaine

Peak: 8.13 = cocaine

Method(s): GCMS

Record for Sample 815459 last updated December 9, 2025