Free UK shipping over £200 Independently HPLC-tested to ≥99% CoA with every batch
Peptides Online UK
0
Shop peptides
Peptides Online research vials in a laboratory
UK verified · CoA on every batch

High-Purity Research Peptides

Independently Verified

Laboratory-grade research peptides independently tested and documented with batch-specific Certificates of Analysis. UK-based dispatch with full batch traceability.

≥99%HPLC purity
27+Compounds
UKBased & verified

≥99% HPLC tested

Purity confirmed before every batch ships.

Batch-specific CoA

Documentation matched to your exact vial.

Next-day UK dispatch

Discreet, tracked, plain packaging.

Secure packaging

Stability-conscious, tamper-evident.

The catalogue

Featured Research Peptides

Each one documented, traceable, and ready for the bench.

Best seller In stock ≥ 99% (HPLC) CoA BPC-157

BPC-157

Recovery
CAS No.137525-51-0
FormulaC62H98N16O22
£15.99
View
New In stock ≥ 98% (HPLC) CoA TB-500

TB-500

Recovery
CAS No.77591-33-4 (Thymosin Beta-4 reference); fragment-s
FormulaC212H350N56O78S
£15.99
View
In stock ≥ 98% (HPLC) CoA GHK-Cu

GHK-Cu

Recovery
CAS No.89030-95-5
FormulaC14H22CUN6O4
£24.99
View
In stock ≥ 99% (HPLC) CoA CJC-1295 & Ipamorelin Blend
CAS No.448944-47-6 (CJC) & 170851-70-4 (Ipamorelin)
FormulaC152H252N44O42/C38H49N9O5
£39.99
View
Best seller In stock ≥ 98% (HPLC) CoA Ipamorelin
CAS No.170851-70-4
FormulaC38H49N9O5
£19.99
View
Best seller In stock ≥ 99% (HPLC) CoA Epitalon

Epitalon

Longevity
CAS No.307297-39-8
FormulaC14H22N4O9
£19.99
View
Lab tools

Laboratory Reconstitution Calculator

Calculate the resulting concentration after adding a specified volume of diluent to a known quantity of research material.

  • Instant concentration & insulin-syringe units
  • Works for any peptide in the catalogue
  • Pairs with our bacteriostatic water
Open the full calculator
Concentration-
Draw on insulin syringe-
Volume per dose-

Based on a U-100 insulin syringe (100 units = 1 ml). For laboratory research use only.

Our testing

We hand you the data,
not just a claim.

Anyone can print “99% pure” on a label. We back it with independent analysis you can trace to the exact batch in your hands.

  • HPLC + mass-specPurity and identity confirmed by independent labs.
  • Batch-specific CoAEvery order ships with its matching certificate.
  • Full traceabilityLook up any batch number, any time.
Explore the CoA library
99.1%
Avg. verified purity
100%
Batches with CoA
3rd-party
Independent labs
27+
Compounds
Full transparency

Certificate of Analysis library

Every batch documented and traceable. Here are our most-requested certificates - browse the full library for all compounds.

Compound & batchIssuedPurityCertificate
BPC-157Batch POL-0013
02 May 2026 ≥ 99% (HPLC) Download PDF
TesamorelinBatch POL-0053
21 May 2026 ≥ 98% (HPLC) Download PDF
CJC-1295 & Ipamorelin BlendBatch POL-0091
22 Jun 2026 ≥ 99% (HPLC) Download PDF
EpitalonBatch POL-0075
06 Jun 2026 ≥ 99% (HPLC) Download PDF
CJC-1295 No DACBatch POL-0033
09 May 2026 ≥ 98% (HPLC) Download PDF
CJC-1295 With DACBatch POL-0027
07 May 2026 ≥ 98% (HPLC) Download PDF
Inside the process

Every Batch Independently Tested by Janoshik

From synthesis to dispatch, each compound is analysed, documented, and traceable - so the data in your hands matches the vial in your hands.

HPLC + MS
Purity & identity testing
100%
Batches with a CoA
3rd-party
Independent verification
Simple & considered

From catalogue to bench

01

Choose & verify

Browse with full specs, and open the batch CoA before you commit - total transparency, upfront.

02

Order quietly

Encrypted checkout, discreet plain packaging, and tracked next-day UK dispatch.

03

Receive & document

Cold-chain-conscious delivery with paperwork matched to your exact batch.

”

The CoA matching is what won us over - every batch number lines up with the documentation. For reproducible work, that’s everything.

R
Dr. R. HayesVerified researcher · United Kingdom
★★★★★

“Consistent purity order after order, and dispatch really is next-day. The vials always arrive intact.”

J
J. MitchellVerified buyer
★★★★★

“I’ve moved all our lab’s sourcing here. Transparent testing, fair pricing, support that gets the products.”

S
S. KaurVerified buyer
★★★★★

“Documentation is audit-ready and genuinely thorough. Exactly what we needed from a UK supplier.”

E
E. LarssonVerified buyer
Learn the language

Peptide glossary

Plain-English definitions for the terms you’ll meet across the catalogue.

HPLC
High-performance liquid chromatography — the analysis used to measure a peptide’s purity.
CoA
Certificate of Analysis — the lab document confirming a batch’s identity and purity.
Lyophilised
Freeze-dried to a stable powder, reconstituted with bacteriostatic water before use.
Reconstitution
Dissolving a lyophilised peptide into liquid to prepare it for research use.
Secretagogue
A compound that prompts the body to release another substance, e.g. growth hormone.
Bacteriostatic Water
Sterile water with 0.9% benzyl alcohol, allowing safe repeated reconstitution.
Peptide
A short chain of amino acids — the building blocks studied across this catalogue.
RUO
Research Use Only — strictly for in-vitro laboratory work, not for human or animal use.
Good to know

Questions, answered

How do you verify the purity of your research peptides?

Each batch is independently analysed, with testing documentation linked to the relevant batch. The Certificate of Analysis (CoA) provides researchers with information such as the reported purity and analytical results, allowing the documentation to be checked against the material supplied.

What does “Research Use Only” mean?

Research Use Only (RUO) means our peptides are supplied strictly for laboratory and scientific research. They are not intended for human or veterinary use, diagnostic or therapeutic purposes, or use as food, medicines or cosmetics.

Does every peptide come with a batch-specific Certificate of Analysis?

Yes. Peptides Online provides batch-specific testing documentation so researchers can check the analytical information associated with the material they receive. You can also browse available certificates through our CoA Library.

How quickly are UK orders dispatched?

Orders are dispatched from within the UK using tracked delivery services. Parcels are sent in plain, discreet packaging, with appropriate care taken to protect research materials during transit. Delivery times can vary depending on the service and destination.

How should research peptides be stored?

Storage requirements can vary between compounds and formats. Researchers should refer to the product information, batch documentation and relevant laboratory handling guidance for the specific material rather than assuming the same storage conditions apply to every peptide.

Can I check a Certificate of Analysis before ordering?

Yes. Available batch documentation can be viewed through our CoA Library, allowing you to review analytical information before placing an order.

Research Insights

Latest from the Research Library

Practical guides covering peptide research, analytical testing, laboratory handling and quality documentation. Explore our latest articles written to make technical topics easier to understand.

View all articles →

Secure & encrypted

Protected checkout with trusted payment providers.

Discreet packaging

Plain, unbranded parcels with tracked next-day UK delivery.

Authenticity guaranteed

Every vial backed by a batch-specific Certificate of Analysis.

UK-based support

A knowledgeable team for technical and order questions.