UK research-peptide price index
PeptideCompare
UK peptide price comparison — compare research peptide prices across UK suppliers.
Flat-fee listings, no sales commission — so the cheapest price ranks first, not the biggest advertiser.
- Independent
- Flat-fee funded
- Research use only
In-vitro laboratory research only. Not for human or veterinary consumption. PeptideCompare does not sell or supply any products — all listings are independent third-party suppliers.
- GHK-Cu£1.00/mg
- Retatrutide£1.00/mg
No sales commission
Suppliers pay a flat monthly fee. Nobody can buy a better rank.
Price per milligram
Every vial size is normalised, so 5 mg and 10 mg compare fairly.
Documentation visible
We show what each supplier says about CoAs and testing — clearly labelled as self-reported.
Research use only
In-vitro laboratory context throughout. We never sell or supply.
Browse by research area
Compare by category
“From” prices and vial sizes across live supplier listings. Pick a size chip to jump straight to that vial.
Skin & cellular longevity
Cosmetic-science peptides, short bioregulator peptides and mitochondrial peptides explored in cellular-ageing literature.
No live listings yet
No live listings yet
No live listings yet
Growth hormone axis
GHRH analogues, ghrelin-receptor ligands and related compounds used to probe pituitary signalling in vitro.
No live listings yet
No live listings yet
No live listings yet
No live listings yet
Neuropeptides & sleep
Neuropeptide analogues examined in neuronal culture, receptor and stress-axis studies.
No live listings yet
No live listings yet
No live listings yet
No live listings yet
GLP-1 & metabolic
Incretin, amylin and glucagon-pathway compounds plus metabolic research tools used in receptor and signalling assays.
No live listings yet
No live listings yet
No live listings yet
Endocrine & reproductive
Hormone analogues and gonadotrophin-related compounds used in receptor and signalling research.
No live listings yet
No live listings yet
No live listings yet
No live listings yet
Immune signalling
Thymic and immunomodulatory peptides used in immune-signalling and host-defence assays.
No live listings yet
No live listings yet
No live listings yet
No live listings yet
Top spreads
Biggest price gaps, same vial size
Where the cheapest and highest in-stock offers differ most for the same size of the same peptide.
| Peptide | Cheapest | Highest | Gap | Compare |
|---|---|---|---|---|
| Retatrutide 30 mg vial | £50.00 Peptides Kent | £100.00 Peptides Kent | 50% · £50.00 | Compare |
Live comparison
GHK-Cu, side by side
Supplier offers normalised to £ per mg. The lowest in-stock offer is highlighted.
| Supplier | Size | Price | £ / mg | Stock | Link health | Delivery | Quality (claimed) | Visit |
|---|---|---|---|---|---|---|---|---|
 Peptides KentLowest United Kingdom | 100 mg vial | £100.00 | £1.00 | In stock Checked 2026-10-23 | Link OK | Free UK | Not stated | Visit Peptides Kent |
Prices are set by independent suppliers and may change. Quality and CoA labels are self-reported claims — not verified by PeptideCompare. PeptideCompare does not sell or supply products and cannot vouch for quality, legality or availability. For in-vitro research only — not for human or veterinary use.
How it works
A price index, not a shop
- 01
Search a peptide
Look up a research peptide by name or alias. Each profile starts with public-science background, not sales copy.
- 02
Compare normalised prices
Every supplier listing is shown by vial size and converted to price per milligram, so different sizes line up on one scale.
- 03
Go to the supplier
Follow the link to the supplier's own site. We never process orders, hold stock or take a cut of any sale.
Who we are
Why PeptideCompare
An independent comparison index for UK research-peptide suppliers. Because suppliers pay a flat fee rather than a cut of each sale, the order you see is the order of the prices.
More about us →Ranked by price, not by ads
Every supplier pays the same flat fee — £10 a month plus £1 per listing. There is no commission, referral fee or paid placement, so nobody can buy a better rank.
Independent of every supplier
We don't sell, stock or ship peptides, and we don't earn anything when you click through or buy.
Transparent about what we don't know
CoA and testing labels are what suppliers say about themselves. We show them, clearly marked, but we don't audit them.
Latest research
Guides & study summaries
21 plain-English guides on mechanisms, storage and handling, and what the literature does and doesn’t say. Research context only.
2 min read
BPC-157: What the Research Actually Looks At
A plain-English overview of BPC-157 — where it comes from, what preclinical studies measure, where the evidence is thin, and how to compare UK listings.
1 min read
Cagrilintide Explained: The Long-Acting Amylin Analogue
What amylin does, how cagrilintide was engineered to last longer, why it's being studied with GLP-1 agonists, and how to compare cagrilintide listings.
2 min read
CJC-1295, Ipamorelin and the Growth-Hormone Axis: A Research Guide
How GHRH analogues and ghrelin-receptor agonists differ, CJC-1295 with vs without DAC, ipamorelin's selectivity, and how to compare blends and single peptides.
Buying guides
More ways to compare
- Buy peptides UK →How to compare UK research-peptide suppliers before you click through.
- Cheap peptides UK →Compare on £ per mg, and why the lowest headline price isn’t always the best value.
- Pure peptides UK →What purity, HPLC and mass-spec claims mean — and what to ask a supplier for.
- Where to buy peptides →A neutral route map from search to supplier site.
- Peptide suppliers UK →How suppliers are listed, and what self-reported really means.
- Peptides sale →Spot genuine price drops by comparing normalised prices.
- Peptide wholesale UK →Compare larger vial sizes per mg before asking for volume terms.
- Natural peptides →Endogenous and natural-identical peptides, in plain English.
- GLOW peptide UK →Blend research context and why composition varies by supplier.
For UK suppliers
£10 a month, plus £1 per listing. Zero commission.
Each product variant is one listing. Keep every pound of every sale — you pay the same flat fee whether you ship ten orders or ten thousand. Card payments via Stripe; cancel any time. We’re onboarding our first UK suppliers now — list early and be there when comparisons go live.
- 113
- peptides tracked
- 21
- research guides
- 0%
- commission
Does PeptideCompare sell peptides?+
No. We never sell, stock or ship anything. PeptideCompare is an independent index that shows what third-party UK suppliers charge, then links you to their own sites.
How do you make money without commission?+
Suppliers pay a flat monthly subscription: £10 base plus £1 for every product variant they list. We take nothing from any sale, so ranking is by price — not by who pays more.
Can I use these products on myself or animals?+
No. Everything referenced here is for in-vitro laboratory research only and is not intended for human or veterinary consumption. We provide no dosing or usage guidance.
How is price compared across vial sizes?+
Each listing is normalised to price per milligram so a 5 mg and a 10 mg vial can be compared fairly. Delivery costs are shown separately because they vary by supplier.
Are suppliers verified?+
In this early version, supplier details are self-reported. We label what suppliers say about certificates of analysis and testing, but we do not independently audit them. Always request documentation yourself.
How often are prices updated?+
Suppliers maintain their own listings through their dashboard. Each row shows a last-checked date so you can judge how fresh a price is. Suppliers can change prices at any time, so always confirm the final price on the supplier's website before ordering.
How do you choose which suppliers to list?+
Any UK-based research-peptide supplier can list by subscribing — £10 a month plus £1 per listing. Listing is not an endorsement, recommendation or guarantee, and we do not verify supplier credentials, product purity or regulatory compliance.
Does a supplier's subscription affect rankings?+
No. Every supplier pays the same flat fee, and default sorting is by price per milligram. There is no commission, referral fee or paid placement that could change the order.
Does using PeptideCompare cost me anything?+
No. Comparing prices is free for researchers. The flat supplier fees are what fund the site, and they do not increase the price you pay a supplier.
What does “research use only” mean?+
It means the material is sold by suppliers for use in controlled laboratory settings — in-vitro experiments, binding assays and other scientific studies. It is not manufactured, tested or approved for use in or on humans or animals.
Is it legal to buy research peptides in the UK?+
Legality depends on the specific compound, its intended use and applicable regulations. You are responsible for making sure that anything you buy complies with the law and is used lawfully. We do not provide legal advice.
Do you verify the quality or purity of listed products?+
No. PeptideCompare is an information and price-comparison service. We do not test, inspect or independently verify any product. Always request a batch-specific certificate of analysis and do your own due diligence.
Can I request a supplier be added?+
Yes. Suppliers can sign up themselves from the For suppliers page, or you can contact us with the supplier's details and we will invite them.
Do you collect my personal data?+
We use standard analytics to understand how the site is used. We do not require registration to compare prices and we do not store personal purchasing information. When you click through to a supplier you leave our site, and their privacy policy applies.
Price alerts · preview
Get told when prices drop
Register interest in email alerts for a peptide, or for any price drop. Alerts are not switched on yet — this form is a preview and doesn’t store your address.