About us
A ledger, not a leaderboard
Buying research peptides usually means choosing between marketing claims. We wanted the receipts — and to show our own.
The Peptide Ledger is an editorial guide to research-peptide shops. We read what shops publish — imprints, terms, product pages and certificates where they exist — and turn it into reviews, rankings and a facts table for every shop. Where a shop hasn’t published something, the table says “not published”.
Who pays us
Some shops are affiliate partners: we earn a commission when you buy through our links, and that can influence their placement. Nexo Research, Europa-Peptide and Peptid24 hold places 1 to 3 and supply our reader codes. Every other shop is ranked below them by score, from its public information, and has no code from us. Shops that want to be listed can read For shops.
What our scores are — and aren’t
Scores are editorial estimates built from each shop’s public information and weighted across five criteria. They are not lab results. Read how we rate for the full method, and our editorial principles for the reasoning behind it.
What we cover — and what we don’t
We cover shops: their documentation, transparency, pricing, shipping and contact options. We do not publish dosing, administration or medical guidance of any kind. The shops we review sell products for laboratory research use only.
Write to us
Corrections, tips and complaints are welcome. The quickest route is a reader letter on the shop’s review page, which reaches the editorial desk directly. Letters need a verified email and are moderated before they appear.