Metabolic Research
Retatrutide 20mg
The same retatrutide (LY3437943) as our 10mg vial — twice the payload from one lot, at a lower cost per milligram. Signed batch CoA on the page.
Vial size
Quantity
£349.96
£499.95
Save £149.99
In stockInc. VAT · Free UK shipping on this order
- Delivery.
- Free UK shipping on this order, Royal Mail Tracked 24. Same-day dispatch before 6pm. Details
- Payment.
- Card — including Apple Pay and Google Pay — or bank transfer approved in your banking app. We never see your card or bank details.
- Returns.
- 14 days to cancel if unopened and sealed (you pay return postage). Faulty, damaged or wrong items are replaced or refunded at our cost. Policy
Certificate of Analysis
Retatrutide 20mg
- Independent lab
- an accredited independent laboratory
- Batch number
- —
- Method
- HPLC-UV + MS
- Result
- ≥98% (HPLC-UV)
The CoA you download is the exact certificate produced for this lot — no edits.
Storage & handling
Keep it stable, keep it sterile
- Sealed vial
- -20°C, protect from light
- Once reconstituted
- Once reconstituted, store at 2–8°C (refrigerated). Use within 28 days. Do not refreeze after reconstitution.
- Diluent
- Bacteriostatic water (0.9% benzyl alcohol)
- Shipping
- Insulated, ice packs
About Retatrutide
The 20mg presentation of retatrutide (LY3437943) — a synthetic 39-residue triple agonist at the GLP-1, GIP and glucagon receptors. Same synthesis route, same ≥98% HPLC-UV specification and the same independent laboratories as the 10mg vial; what differs is the fill weight, the rate per milligram and how long one lot number lasts. The signed third-party certificate for lot this lot is published on this product page. This page is the 20mg fill specifically. If you are searching for retatrutide generally, the Retatrutide 10mg vial is our standard listing and the cheaper entry point; if a study will run long enough that a lot change would become a variable, the Retatrutide 30mg exists for that.
Research areas
- Extended GPCR signalling time-courses
- Multi-condition receptor pharmacology
- Long-duration adipocyte and hepatocyte assays
- Analytical method development
Every batch independently tested by an accredited independent laboratory before dispatch. The signed certificate for this lot is published on this page.
Legal notice
This product is sold strictly for in-vitro laboratory research purposes only. It is not approved for human or veterinary use, is not a drug, food, or cosmetic, and should not be misused as such. UK Peptides accepts no liability for misuse. By purchasing you confirm you are a qualified researcher aged 18 or over.
Retatrutide 20mg
£349.96