20,648 samples completed from 41 states. Last updated Friday, April 10, 2026.
818715
From Grand Rapids, Michigan on March 30, 2026
Assumed to be heroin, fentanyl
Only 1 major substance detected:
- heroin
And we also found traces of acetylcodeine + 6-monoacetylmorphine (6-MAM). Trace substances in small quantities are usually harmless, but can sometimes cause health problems. Unexpected sensations may be due to these.
Looks = tan, flaky, chunky, powder
Need free supplies and advice to keep you safe? Find your nearest harm reduction program at harmreduction.org
Major substances in graph:
Peak: 10 = heroin
Method(s): GCMS
Record for Sample 818715 last updated April 8, 2026