After spending too long vetting sellers before my first purchase, I put together a checklist. Sharing it because this question comes up constantly.
Non-negotiable:
1. Certificate of Analysis (CoA) from a named third-party lab — not just "tested" on the site, an actual PDF you can request and read.
2. Named harvest region — not just "Nepal" or "Himalayas." At minimum, a district.
3. Harvest season (spring vs. autumn).
4. Grayanotoxin concentration listed on the CoA — a specific number in mg/kg, not just "compliant."
5. Batch or lot number that matches your order.
Nice to have:
- Lab accreditation details (ISO 17025 is the standard)
- Beekeeper or collector relationship mentioned somewhere
- Real contact info that leads to a real person
This took me embarrassingly long to figure out. Hope it saves someone time.
Solid list. I'd add: learn to read the CoA, not just verify it exists. Key things to check:
- Is the lab accredited? Search the lab name.
- Does the sample ID match your order's batch number?
- What detection method was used? HPLC is standard; anything vaguer is worth questioning.
- Is a grayanotoxin figure actually listed, or just "tested"? "Tested" without a number is meaningless.
- When was the test done, and does the date align with the claimed harvest season?
A CoA that passes all three of those checks is a real document. One that fails any of them is just paper.
US buyer perspective: import documentation matters too. A seller who can show you a phytosanitary certificate or USDA import records is a different level of legitimacy than one who can't. It means they're operating through proper channels rather than informal routes. That alone filters out a lot of bad actors. Doesn't guarantee quality, but it's a meaningful floor.