Transparency matters. Every batch of Mariko Grove coffee is independently tested for contaminants before it reaches you. Below are the certificates of analysis (COAs) from our testing partner, available for download.
Current Certificates of Analysis
These reports cover our roasted coffee base (Lot #12983284), tested by an independent laboratory through our roasting partner Roastify, LLC in Bend, Oregon.
Mycotoxins & Heavy Metals
- Tests: Arsenic, cadmium, mercury, lead, aflatoxins
- Results: All non-detectable within specified limits
- Method: Laboratory analysis per FDA guidelines
- Completed: July 14, 2025
- Lab Director: Thomas Scott
Download Mycotoxins & Heavy Metals Report (PDF)
Mold & Yeast
- Test: Yeast and mold culture
- Results: <10 CFU/g (within safe limits)
- Method: AOAC 997.02
- Completed: July 18, 2025
- Lab Director: Thomas Scott
Download Mold & Yeast Report (PDF)
What We Test For
| Category | Contaminants |
|---|---|
| Heavy metals | Arsenic, cadmium, mercury, lead |
| Mycotoxins | Aflatoxins and related compounds |
| Microbial | Yeast and mold |
About Our Testing
Our COAs are produced by an independent laboratory engaged through our roasting partner, Roastify, LLC. Sampling is performed on the roasted coffee base prior to blending. We are working with our suppliers to obtain additional COAs specific to our Lion's Mane and Chaga mushroom extracts and will publish those here when available.
If you have questions about our testing or would like additional detail, contact us at hi@marikogrove.com.