818256
From Grand Rapids, Michigan on March 4, 2026
Assumed to be heroin
3 major substances detected:
- 4-ANPP
- heroin
- fentanyl
And we also found traces of acetylcodeine + 6-monoacetylmorphine (6-MAM) + papaverine. 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.
Looks = brown, chunky
Need free supplies and advice to keep you safe? Find your nearest harm reduction program at harmreduction.org
Major substances in graph:
Peak: 9.23 = 4-ANPP
Peak: 9.98 = heroin
Peak: 10.42 = fentanyl
Method(s): GCMS
Record for Sample 818256 last updated March 10, 2026