Built on one principle:
supply only what we can verify.
Peptides.net has supplied UK and European researchers with independently tested, research-grade peptides since 2018. Every compound we stock is third-party HPLC verified and dispatched with a batch-specific Certificate of Analysis.
8+
Years supplying UK researchers
40+
Research-grade compounds
≥98%
Minimum purity on every batch
100%
Third-party COA verified
Who we are
A UK research peptide supplier with an eight-year track record.
Peptides.net was founded in 2018 with a clear focus: provide UK and European researchers with research-grade peptides that they can actually trust. That means independently verified purity data, full batch traceability, and a straightforward purchasing process.
Over eight years we have built relationships with accredited third-party laboratories, academic institutions, and independent research suppliers across the UK and Europe. Our catalogue covers over 40 of the most widely studied peptide compounds, from growth hormone secretagogues and tissue repair peptides to metabolic and immune modulators.
We are a small, focused team. We do not operate as a mass-market distributor. Every order is handled with the same attention to documentation and cold-chain integrity that we applied to our very first shipment.
Third-party tested
≥98% purity guaranteed
Next day dispatch
Batch-specific COA
Cold-chain included
No bulking agents
How we operate
What sets our compounds apart
Independent testing, always
Every batch is sent to a third-party accredited laboratory for HPLC purity analysis and mass spectrometry identity confirmation before it is dispatched. We do not test in-house. Removing the conflict of interest from the testing process is the single most important thing we do.
Full traceability on every order
Each compound in our catalogue is assigned a unique batch number that runs from synthesis through to the COA and the vial label. You can verify exactly which analytical run produced the purity figure on your certificate. Batch-specific COAs are available on every product page and on request.
Cold-chain from storage to door
Lyophilised peptides are stored under controlled conditions in our UK facility and packed with thermal insulation and cold packs for every order, at no extra charge. Our packaging is designed to maintain stable temperatures for a minimum of 48 hours under typical UK and EU transit conditions.
No bulking agents, no shortcuts
We do not add mannitol or any other bulking agent to our peptides. Some suppliers do this to improve the appearance of the lyophilised cake. It dilutes the stated quantity. What is printed on our vial labels is the actual peptide content, verified by weight during quality control.
Our history
Eight years of consistent supply
Founded
Peptides.net was established to supply UK researchers with independently verified research-grade peptides. From the outset, third-party testing was non-negotiable.
Catalogue expansion
The compound catalogue grew to cover the most widely researched peptide families, each with batch-specific COA documentation available at launch.
Cold-chain upgrade
We standardised cold-chain packaging across all orders, including thermal insulation and cold packs as a baseline requirement rather than a premium add-on.
EU shipping
International tracked shipping to EU member states was introduced, with full customs documentation and Royal Mail International partnerships.
40+ compounds
The catalogue reached over 40 independently verified research compounds, with all HPLC and MS data independently produced at accredited third-party laboratories.
Why researchers choose us
More than just a supplier
Consistent quality and documentation are the baseline. Here is what we deliver on top of that.
Consistent stock levels
Eight years of supply chain relationships mean we maintain reliable UK stock of over 40 compounds. Your research programme does not have to wait for overseas shipments.
Discreet packaging
All orders ship in plain, unmarked outer packaging with no product names, branding, or company details visible on the outside.
Next business day dispatch
Orders confirmed by midnight are dispatched the following business day via Royal Mail. Tracked and guaranteed delivery options are available at checkout.
Straightforward support
A small, knowledgeable team responds to all order and research enquiries within 1 to 2 business days. We do not use automated response queues.
Trusted by institutions
Over eight years we have built relationships with academic institutions, independent researchers, and verified research suppliers across the UK and Europe.
No blended products
We supply single-compound peptides only. Blended products cannot be independently verified for the accuracy of each component's weight. Quality assurance requires individual compounds.
Research use only
All compounds supplied by Peptides.net are strictly for in-vitro laboratory research. They are not licensed medicines and are not approved for human or veterinary use by the MHRA or any other regulatory authority. By purchasing, you confirm that you are acquiring compounds for legitimate scientific research purposes only.