Research use only. Not for use in humans or animals. All products and information on this site are provided strictly for in-vitro laboratory research purposes. They are not for use in humans or animals, and are not drugs, foods, cosmetics, or medical devices.
Where to Buy Peptides: A Researcher's Guide to Safe Sourcing
Sourcing research peptides is a decision that directly affects experimental outcomes. This guide covers what to look for when choosing where to buy peptides.
What to look for in a peptide supplier
1. Third-party COAs
A reputable supplier provides a Certificate of Analysis from an independent ISO 17025 laboratory for every batch. The COA should include HPLC purity, mass spectrometry identity, and LAL endotoxin results.
2. Lot traceability
Each vial should carry a lot number that maps to a specific COA.
3. Public COA access
COAs should be publicly accessible — not hidden behind a login.
4. Research-use-only labeling
Peptides should be sold explicitly for laboratory research use only (RUO).
5. Cold-chain shipping
Lyophilized peptides are stable at room temperature for short periods, but cold-chain shipping preserves long-term stability.
Red flags to avoid
- No COA available, or a COA with no chromatogram
- The same COA reused across multiple batches
- Purity claims without a stated analytical method
- Health or medical claims (peptides are for research use only)
- No lot number on the vial
Why Peptech
Peptech checks every box: per-batch COAs from an independent ISO 17025 lab, QR-coded lot traceability, public COA library, explicitly sold for research use only, and cold-chain shipping.
FAQ
Where can I buy peptides for research?
You can buy research peptides from Peptech at peptidetech.is. Every batch ships with a third-party COA, cold-chain shipping, and lot traceability.
How do I know if a peptide supplier is legit?
A legitimate supplier provides per-batch COAs from an independent lab, publishes them publicly, includes lot numbers on vials, and sells peptides strictly for research use only.