How we rate peptide vendors

PeptidesRated is an editorially independent comparison platform that scores and ranks peptide vendors based on up-to-date pricing, quality, and reputation. We don't sell peptides, we score the vendors that do, and we apply the same data-driven process to every vendor.

What goes into a score

Every vendor is rated on the same six factors:

• Independent lab testing: purity verified by third-party Certificate of Analysis (COA) results we can independently confirm. This is the factor we weigh most heavily.
• Price: how a vendor's cost per milligram compares to the rest of the market.
• Reputation: organic reviews and community sentiment.
• US availability: whether they ship to the United States.
• Product range: how many of the peptides we track they carry.
• Payment safety: the payment options offered and how much buyer protection they provide.

We only count what we can independently verify. A vendor's own quality claims do not earn credit on their own.

Kept current

Pricing is refreshed regularly, and a vendor's rating updates when its testing, reputation, or pricing changes. Each vendor profile shows when its data was last updated.

Our scores are editorial opinion

The PR Score and our vendor rankings are our editorial assessment based on the factors above. They are our opinion, not statements of objective fact about any vendor. Where we state a verifiable fact (for example, whether a third-party COA was available on a given date), we note the date and source.

Independence

Some vendor links are affiliate links, and we may earn a commission if you buy through one. This never affects a vendor's score: the same formula applies to everyone, and rankings are determined by the data, not by who we link to. A top-ranked vendor may have no affiliate relationship with us, and a low-ranked one may have one. See our full advertising and independence policy.