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21,165 samples completed from 42 states. Last updated Monday, May 4, 2026.
Data Use & Protection Statement
Spectra image for sample 605109

605109

From Tarboro, North Carolina on April 15, 2026

Assumed to be fentanyl, unknown

This is a messy brew of 5 major substances:

  • medetomidine
  • procaine
  • tetracaine
  • 4-ANPP
  • fentanyl

And we also found traces of phenethyl 4-ANPP + N-phenylpropanamide. 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, fine

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

Major substances in graph:

Peak: 7.42 = medetomidine

Peak: 7.76 = procaine

Peak: 8.36 = tetracaine

Peak: 9.22 = 4-ANPP

Peak: 10.41 = fentanyl

Method(s): GCMS

Record for Sample 605109 last updated April 28, 2026