Scoring Methodology
How We Score Vendors
Every vendor is scored on four criteria, equally weighted. The overall score is a weighted average on a 0-10 scale.
COA Transparency25%
Public COAs, third-party labs, recency, endotoxin testing
Purity Verified25%
Finnrick rating + independent test results
Customer Reviews25%
Trustpilot ratings, review volume, sentiment — covers service, shipping, and product quality
Pricing Value25%
Price per mg relative to category median
Data Sources
- Product catalog scraped directly from vendor websites
- COA documents analyzed for lab names, purity, methodology
- Trustpilot and third-party review platform ratings
- Finnrick.com independent purity verification data
- Price per mg calculated across 1,600+ products
Affiliate Disclosure
Some vendor links on this site are affiliate links. When you purchase through these links, we may earn a commission at no extra cost to you. Affiliate relationships never influence our scores or rankings. Scores are calculated algorithmically from the data sources described above.
Update Frequency
Product prices and availability are re-scraped weekly. Review ratings are updated monthly. Scores are recalculated after each data refresh. COA data is updated as new documents are published by vendors.
All products referenced on this site are for research use only. Not for human consumption.