- 98.0% HPLC purityTested by PeptideVerify
- Verifiable CoACertificate PV-8B67BB-HAJY
- Cold-chain packed2–8°C with gel ice packs
- Next-day UK deliveryDispatched before 2pm, Mon–Fri
Standard concentration · Research use only
Retatrutide 30mg PenPre-mixed research kit, UK next-day delivery
Our standard research kit: 30mg of Retatrutide, made in the UK and supplied pre-mixed with bacteriostatic water in a multi-use pen — no reconstitution step, none of the dosing arithmetic errors that come with it. Independently tested, cold-chain packed and sent by next-day Special Delivery across the UK.
Price includes cold-chain packaging and tracked next-day UK delivery.
In brief
- The RETApro Retatrutide 30mg Pen is £129 (£4.30/mg), or £219 for a twin pack of two pens (£3.65/mg). UK delivery is included.
- Each pen holds 30mg of Retatrutide, supplied pre-mixed with bacteriostatic water — sometimes searched for as a “reta pen”.
- The current batch is 98.0% pure by HPLC–UV (215 nm), tested by PeptideVerify (certificate PV-8B67BB-HAJY), and the certificate can be verified against the lab's own record.
- Made by RETApro and sold direct. Supplied strictly for laboratory and research use; Retatrutide is not a licensed medicine.
Specification
- Compound
- Retatrutide (LY3437943) — GLP-1 / GIP / glucagon receptor triple agonist
- Content
- 30mg per pen
- Format
- Pre-mixed with bacteriostatic water in a multi-use pen
- Purity
- 98.0% by HPLC–UV (215 nm)
- Expected molecular weight
- 4,731.41 Da
- Testing laboratory
- PeptideVerify · certificate PV-8B67BB-HAJY · issued 6 July 2026
- Storage
- 2–8°C, protected from light, never frozen
- Delivery
- Royal Mail Special Delivery Guaranteed, next working day, included in the price
- Supplied for
- Laboratory and research use only
Independent testing you can check yourself
A PDF certificate is easy to edit, so ours carries a certificate ID that resolves on the testing laboratory's own site. PeptideVerify analysed the current batch on a Shimadzu LCMS-8040 · PDA and reported 98.0% purity by HPLC–UV (215 nm). Read how to evaluate a research peptide supplier for what those figures do and do not tell you.
30mg or 60mg?
The two pens differ only in how much compound they hold. Per milligram, the 60mg pen is the cheaper of the two. The full cost-per-mg breakdown covers every pack.
| Pack | Retatrutide | Price | Per mg |
|---|---|---|---|
| Retatrutide 30mg Standard Kit | 30mg | £129 | £4.30/mg |
| Retatrutide 30mg × 2 | 60mg | £219 | £3.65/mg |
| Retatrutide 60mg Professional Kit | 60mg | £199 | £3.32/mg |
| Retatrutide 60mg × 2 | 120mg | £379 | £3.16/mg |
Looking for larger amounts? Wholesale packs of 5 to 100 boxes start at £449.
Retatrutide 30mg Pen — questions
What is in the Retatrutide 30mg Pen kit?+
30mg of Retatrutide, supplied pre-mixed with bacteriostatic water in a multi-use pen. It ships in purpose-built cold packaging with gel ice packs inside a discreet, unmarked outer box.
How much is the Retatrutide 30mg Pen in the UK?+
£129 for a single pen, which is £4.30/mg. The twin pack of two pens is £219 (£3.65/mg). Prices are in GBP and include cold-chain packaging and tracked next-day UK delivery — nothing is added at checkout.
Has this batch been independently tested?+
Yes. The current batch was tested by PeptideVerify at 98.0% purity by HPLC–UV (215 nm). The Certificate of Analysis (PV-8B67BB-HAJY, issued 6 July 2026) can be downloaded from this page and checked against the laboratory's own record.
What is the difference between the 30mg and 60mg pens?+
Only the amount of compound. The 60mg pen is £199 (£3.32/mg); the 30mg pen is £129 (£4.30/mg). Both are the same pre-mixed pen format.
Is the twin pack two separate pens?+
Yes — the twin pack is two individually boxed 30mg pens shipped together, for extended research runs or multi-replicate studies.
How should it be stored?+
At 2–8°C, away from direct light, and never frozen. Once opened it should stay refrigerated and be used within the period given in the handling guidance supplied with the order.
Is Retatrutide legal to buy in the UK?+
It is sold in the UK strictly for laboratory and research use. Retatrutide is not licensed or approved as a medicine anywhere, and RETApro does not sell it for human or veterinary use.
Supplied strictly for laboratory and research use only. Not for human or veterinary use, and not intended to diagnose, treat, cure, or prevent any disease. Retatrutide is not approved or licensed as a medicine by the MHRA, FDA, or any other regulator.