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20,369 samples completed from 41 states. Last updated Tuesday, March 31, 2026.
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805077

From Grand Rapids, Michigan on July 3, 2024

Assumed to be heroin; fentanyl

This is a messy brew of 7 major substances:

  • xylazine
  • 4-ANPP
  • acetylcodeine
  • 6-monoacetylmorphine (6-MAM)
  • heroin
  • 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.

Xylazine causes serious skin problems. These can happen anywhere on the body and don't heal quickly. And, xylazine can come on stronger than traditional dope and knock you out, so be mindful of your surroundings. It's best to avoid dope with xylazine. You might need medical attention to prevent long-term damage.

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 = tan, powder, chunky

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

Major substances in graph:

Peak: 7.69 = xylazine

Peak: 9.39 = 4-ANPP

Peak: 9.61 = acetylcodeine

Peak: 9.7 = 6-monoacetylmorphine (6-MAM)

Peak: 10.17 = heroin

Peak: 10.64 = fentanyl

Peak: 11.3 = quinine

Method(s): GCMS

Record for Sample 805077 last updated July 25, 2024