Guides
Plain-English guides to buying research peptides carefully: what the evidence on a certificate means, how to judge a supplier, and how products are stored and priced. Written by our editorial team, with no supplier input.
- What are research peptides?What the term means, what an RUO label does and does not do, and how these products differ from licensed medicines.Read the guide →
- How to read a peptide certificate of analysisHPLC purity, mass spec identity, net peptide content, batch numbers and the signs of a weak or fake certificate.Read the guide →
- Third-party peptide testing explainedIn-house versus independent COAs, accreditation, which tests matter and what one result can prove.Read the guide →
- How to spot a fake or unreliable peptide supplierTwelve checks on company details, testing, payment, pricing, reviews and regulator warnings.Read the guide →
- How to store peptidesTemperatures, light and moisture, freeze–thaw cycles and how long a reconstituted vial keeps.Read the guide →
- Bacteriostatic waterWhat it is, how it differs from sterile water, how long an opened vial lasts and how volume changes concentration.Read the guide →
- Peptide prices explainedPrice per mg, vial sizes, currencies, hidden costs and why the cheapest listing is not always the best value.Read the guide →
Are peptides legal where you live?
The rules on buying, importing and selling research peptides differ by country. Read the overview, or go straight to your country:
Peptide guides
What each peptide is, what the published research shows, and its regulatory status, with links to the studies. See all 28 peptides.