About Peptide Grades
An independent editorial team grading peptide vendors on transparency — not ad spend, not hype, not who pays us the most.
What we do
We evaluate peptide vendors on five verifiable transparency signals — things like publicly accessible Certificates of Analysis, batch traceability, named third-party labs, clear refund and shipping policies, and verifiable business ownership. Each vendor receives a Vendor Transparency Score from A to E based on what they're willing to show you.
Every signal we use can be checked by anyone with a web browser. We don't rely on insider access, paid data, or anonymous tips. If you want to understand exactly how we score vendors, read our full methodology.
What we don't do
- We don't test peptides. We are not a laboratory. We grade vendors, not products.
- We don't sell peptides. We have no inventory, no storefront, and no financial interest in any vendor's sales beyond disclosed affiliate commissions.
- We don't provide medical advice. Nothing on this site should be interpreted as a recommendation to use any peptide or substance. Consult a qualified healthcare professional.
Why we exist
The peptide vendor space is noisy. Forums are full of conflicting opinions, vendor-run “review” sites blur the line between editorial and advertising, and buyers are left guessing which suppliers are actually legitimate. We built Peptide Grades to cut through that noise with a scoring system based entirely on publicly verifiable evidence.
We participate in affiliate programs — some vendor links on this site earn us commissions. But affiliate status has zero effect on scores. Vendors with affiliate programs can still get an E grade, and vendors without them can get an A. The methodology is the methodology. See our affiliate disclosure for full transparency.
Contact us
Have a question, correction, or vendor submission? Reach us at [email protected].
We read every email. If you're a vendor who believes your score is inaccurate, include specific evidence and we'll review it. We correct errors promptly and update scores when the underlying evidence changes.