StoreFreeze-driedEntry 0005

GLP-3

Retatrutide (LY3437943), supplied as a dry powder in a sealed glass vial. Read the library entry.

Tested purity

99.0%

Identity check

Confirmed

Tested

27 Oct 2026

Lot RET10-2611A · tested by [Independent lab]See the lab report
22 vials left in this lotNext lot already in testing
Vial size £6.90 per mg
Buy more, pay less Applied in the basket
£69.00
1 × 10 mgPrice includes VAT where it applies. No fees at checkout.
In stock
Order now for dispatch today Free UK Tracked 24, arrives .

Lab report per lotIndependent HPLC and MS

Secure checkoutNo account needed

Replaced if damagedTell us within 14 days

Plain, sealed packingVial in a padded sleeve

Often ordered together: GLP-3 + TirzepatideThe two incretin peptides in the store, each with its own lot certificate. £138.00 for both.

Ordering 10 or more vials, or for an institution with a purchase order? Request a quote. We answer within one working day.

For laboratory research only. Not for human or veterinary use. You confirm this once at checkout.

Lot

The lot you will receive

Every vial in this listing comes from lot RET10-2611A. It was tested before it went on sale, and the lot number on your label opens the same certificate.

LotSizePurityTestedStatus
RET10-2611A10 mg99.0%27 Oct 2026On sale
RET10-2609A10 mg99.1%15 Sep 2026Sold out

Open the lot register

Peptidarium · Lot certificate

Certificate of analysis

Specimen
ProductGLP-3, 10 mg
LotRET10-2611A
Purity, RP-HPLC (220 nm)99.0%
Identity, ESI-MSExpected 4731.4 · Found 4731.6
AppearanceWhite lyophilised powder
Net peptide content[Value]
Date of analysis27 Oct 2026
Main peak Retention time
Illustration · live site shows the lab's real trace
Tested by [Independent lab], [City]Download PDF
Library

From the library

Entry 0005 · Rev 1.0 · Reviewed 2 Nov 2026

GLP-3 is our listing name for retatrutide (LY3437943), a 39-residue lipidated peptide from Eli Lilly that acts on the GIP, GLP-1 and glucagon receptors. Phase 2 results were published in 2023 and phase 3 trials began reporting in 2025. It is not a licensed medicine anywhere.

Read the full entry, with 10 references Semaglutide vs tirzepatide vs retatrutide
Formula
C221H342N46O68
Avg mass
4731.4 g/mol
CAS
2381089-83-2
Sequence
Y-Aib-QGTFTSDYSI-αMeL-LDKK*AQ-Aib-AFIEYLLEGGPSSGAPPPS-NH₂ (*C20 diacid side chain on Lys17)
Delivery

Delivery and replacements

WhereServiceTimePrice
UKRoyal Mail Tracked 24Arrives , next working day aimFree
EURoyal Mail International Tracked3 to 5 working days£9.95 · free over £150.00
US and CanadaRoyal Mail International Tracked5 to 7 working days£12.95 · free over £200.00

Orders placed before 3 pm on a working day leave the same day. If a vial arrives damaged or you receive the wrong item, tell us within 14 days and we send a replacement.

Reviews

Customer reviews

Verified reviews from [review service] show here, newest first, with the reviewer's order confirmed. We never write, edit or filter them.Placeholder
FAQ

Before you order

Which lot will I receive?

The lot shown in the buy box. It is printed on your vial label, and the same number opens its certificate in the lot register.

What is in the vial?

GLP-3 (retatrutide) as a dry, white powder sealed under a crimped cap. Nothing else is added.

Is GLP-3 the same as retatrutide?

Yes. GLP-3 is the name we list it under. The vial label and the certificate both name retatrutide (LY3437943), and the mass spectrum confirms its identity.

When will my order arrive?

UK orders paid before 3 pm on a working day leave the same day by Royal Mail Tracked 24, free, and usually arrive the next working day. EU orders take 3 to 5 working days; the US and Canada 5 to 7.

Is GLP-3 for human use?

No. GLP-3 is sold as a research material for laboratory use only. It is not a medicine and is not for human or veterinary use. The library entry describes what published studies measured, not how to use it.

How do multi-buy discounts work?

Order 3 or more vials of the same product and size for 10% off each, or 5 or more for 15% off. The discount shows in the basket straight away.

Often ordered with

All products