Compound Buyer
A single research vial caught in a shaft of warm afternoon light against a deep, painterly shadow.
Independent · reader-reviewed · no affiliate fees

The reader-reviewed UK research-peptide supplier guide.

Compound Buyer scores UK research-peptide suppliers on verifiable evidence and 166 verified reader reviews, with no advertising, no affiliate fees and no exceptions. We review who is selling and how well, explain how the market really works, and help buyers navigate it without getting burned, from spotting a scam to reading a certificate of analysis.

A research vial of white lyophilised powder on a walnut desk.
The basics

What a research peptide is, in plain English.

What the term actually means, how the compounds are supplied and stored, and why purity testing matters.

A peptide certificate of analysis on a clean desk.
Certificates

How to read a certificate of analysis for peptides.

What a good CoA contains, how to spot a reused one, and how to verify it independently.

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Accreditation

ISO 17025 and UKAS, explained.

What lab accreditation actually guarantees, and how to check a peptide testing lab in the UK.

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UK law

What "research use only" means in UK law.

The legal framework behind every UK peptide page, and the roles of MHRA, ASA and Trading Standards.

The Dispatch, A quieter edition, between editions

Posted four times a year. Never more.

A short Thursday letter from the desk: supplier checks that did not warrant a full piece, regulatory notes worth flagging, and the occasional correction. No tracking, no sponsors, free to read.

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