Who we are
Peptide COA is a technical journal on certificates of analysis for peptides and the laboratory methods behind them: high-performance liquid chromatography (HPLC), mass spectrometry and endotoxin testing. It is written and edited by the Peptide COA desk, an editorial team that publishes under the desk name rather than individual bylines.
We started from a narrow question that comes up constantly and is answered badly: when someone hands you a certificate of analysis, how do you know whether it is real, and what does it actually prove? Our pages try to answer that in plain language, with the evidence linked.
What we cover, and what we don't
We cover documents and methods: how to read a COA, how HPLC and mass spectrometry work, how to verify a report with the laboratory that issued it, and what a batch certificate can and cannot tell you about a single vial.
We do not give dosing, reconstitution, cycling or stacking information, we do not say where to buy peptides, and we do not give medical advice. We don't sell anything, and we don't name or rate peptide sellers.
Editorial standards
- Answer first. Every page opens with a direct answer to the question it is about, then shows the working.
- Primary sources. Factual claims link to the source we checked, preferring regulators (TGA, FDA, EMA, WHO), accreditation bodies (NATA, ILAC), university texts and peer-reviewed journals.
- Nothing invented. We don't publish made-up statistics, reviews, test counts or credentials. Where we couldn't verify something, we left it out.
- Illustrations are labelled. Example certificates, chromatograms and spectra on this site are drawn by us, use fictional laboratories and samples, and are marked "illustrative example". They show what to look for; they are not real results.
- Plain language. Technical terms are explained where they first appear.
How facts are checked
Each claim is checked against its source at the time of writing, and the page carries the date it was last updated. When a source changes, for example when a regulator revises a guidance document, we update the page and the date. Photos are credited with their author and licence beneath the image.
How resources are chosen
The verification resources on the front page are chosen for what they let a reader check: a laboratory's accreditation, a business's registration, a document's authenticity, or a specific vial. We include one vial testing service, marked "Specialist pick", because it answers the one question the registers can't: what is in the vial you hold. The list is a starting point, not a complete directory.
Corrections
If something on this site is wrong or out of date, email hello@peptidecoa.online with the page address and what needs fixing, and a source if you have one. We check every correction request against the source, fix confirmed errors promptly, and update the page's date when we do.
Contact
The quickest way to reach the desk is email: hello@peptidecoa.online. More detail is on the get in touch page.