Retatrutide
Research Peptide
SupplyPeptides — UK research peptide supplier since 2014
SupplyPeptides: research peptides UK laboratories trust
For over a decade we have supplied HPLC-verified, batch-documented peptides to UK laboratories — with a searchable COA library, same-day Royal Mail dispatch, and a three-step verification standard no reseller matches.
For laboratory research use only. Not for human consumption.
10+ years
99%+ HPLC purity
10+
Years in operation
99%+
HPLC purity, every batch
100%
Lots third-party tested
£50+
Free UK tracked delivery
Featured Compound
Retatrutide
The most studied triple-agonist in metabolic research — targeting GIP, GLP-1 and glucagon receptors, verified to ≥99% purity on every batch.
- Class
- Triple agonist
- Targets
- GIP · GLP-1 · Glucagon
- Purity
- HPLC ≥99%
- COA
- Published per batch
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Delivery
How we deliver your peptides
Discreet Packaging
Plain, unbranded packaging — nothing on the outside hints at what’s inside. Your privacy is the standard.
Delivered to Your Door
Tracked Royal Mail 24 dispatch, sent the same day when you order before midday UK time on a business day.
Choose a Pick-Up Point
Prefer to collect? Select a local pick-up point at checkout and pick up your parcel whenever suits you.
The SupplyPeptides Standard
How every batch is verified
Nothing ships on trust alone. Every lot moves through the same three checks — and batch COAs for current UK stock are listed in our Certificates library.
01
HPLC Purity Assay
High-performance liquid chromatography confirms ≥99% purity for every batch.
02
Mass-Spec Identity
Mass spectrometry verifies the compound matches exactly what the label states.
03
COA on record
Batch Certificates of Analysis are listed in our COA library for current UK stock.
About SupplyPeptides
“For research purposes only. Not for human consumption. Every compound independently verified.”
SupplyPeptides exists for one reason: to give laboratories a peptide supplier they never have to second-guess. Every compound we stock is sourced, verified independently, and held to a standard deliberately stricter than the industry asks for.
Uncompromising Purity
Each batch passes independent analysis before it ships. Certificates of Analysis for current UK stock are listed in our COA library.
Precision at Every Step
Storage, handling, and packaging are controlled to match the rigour a research bench expects.
Researchers First
Not a marketplace — a specialist supply line for people who need reliable compound sourcing.
UK Warehouse, Fast Dispatch
Order before midday UK time and it typically leaves the same business day via Royal Mail 24.
Research Hub
Latest from the blog
Compound overview
BPC-157: Research Overview, Mechanisms & Peer-Reviewed Studies (2026)
Jul 24, 2026
Lab tools
Peptide Reconstitution Calculator & Laboratory Guide
Jul 24, 2026
Quality
How to Read a Certificate of Analysis (COA) for Research Peptides
Jul 24, 2026
Lab tools
Peptide Storage & Handling: A Laboratory Guide
Jul 25, 2026
FAQ
Research peptides UK — frequently asked questions
Quick answers on testing, dispatch, and Research Use Only supply. More detail lives on our FAQ page.
Where can I buy research peptides in the UK?
SupplyPeptides is a UK-based supplier of research-grade peptides, including Retatrutide, Tirzepatide, Semaglutide and Cagrilintide. Browse the full research catalogue — every order dispatches from our UK warehouse via tracked Royal Mail 24.
Are your peptides tested and is a COA available?
Yes. Every batch is HPLC-tested to ≥99% purity and mass-spec verified. Batch Certificates of Analysis are listed in our COA library for current UK stock.
How fast is UK dispatch?
Orders placed before the daily cut-off are dispatched the same day via tracked Royal Mail 24, arriving next day across the UK including Saturdays.
Are these products for human use?
No. All products are supplied strictly for laboratory and in-vitro research use only (RUO) — not for human or veterinary consumption, dosing, or therapeutic use. See the Research Hub for RUO-safe educational guides.
Customer feedback
What researchers
say about us.
Recent comments from researchers. Visit Trustpilot for the full, independently hosted review history.
The order process felt organized from beginning to end. Nothing confusing or frustrating — very professional.
Ordered a few times now, always fast delivery on time. I get good results from the products, never had any issues.
This website is great — the products are by far the best I've found so far. Extremely fast delivery and fantastic customer support. Recommended.
See all reviews on our Trustpilot profile