Metabolic research
Retatrutide
GLP-1, GIP and glucagon receptor triple-agonist research compound supplied as a lyophilised powder.
Lab report 99% purity by independent HPLC Report 100016392 is published with the original scan. View report.No reconstitution supplies needed. Bought separately for a standard vial, water, needles and wipes come to £14.
Are you sure you have these? Select them. A standard vial arrives as lyophilised powder. Bacteriostatic water, insulin needles and alcohol wipes are needed to prepare it in the laboratory. Nothing is added unless you tick it.
Add £50 more for free UK delivery · free from £100
Also available as: Retatrutide Pen Vial (pre-filled kit)
Overview
Retatrutide is a synthetic, lipidated single-chain peptide engineered as a triple receptor agonist, with activity reported in the literature at the GLP-1, GIP and glucagon receptors. It is one of the most closely followed compounds in current metabolic-research literature and is supplied here as a lyophilised powder for laboratory use.
As a research compound it is studied in vitro and in preclinical models for its receptor-binding behaviour and downstream signalling across all three targets. North Peptides UK supplies it strictly as a reference material for that research; it is not a medicine and is not for human or animal consumption.
Research areas
- Binding and signalling activity at the GLP-1, GIP and glucagon receptors, studied in vitro
- Comparative receptor pharmacology against single- and dual-agonist reference peptides
- Stability, solubility and handling characteristics of lipidated peptides in laboratory preparations
- Use as a reference standard in analytical method development
At a glance
- 99% purity — independently verified by HPLC
- Measured at 16.49mg against a 15mg label claim
- UK stocked, 24–48h dispatch after payment
- Stored frozen until dispatch
- Full lab report published on site
Storage and handling
Supplied as a lyophilised powder in a sealed vial and kept frozen until dispatch. Unopened vials are typically stored at -20°C for the long term and 2-8°C for short periods. After reconstitution with bacteriostatic water, vials are generally refrigerated at 2-8°C, protected from light, and not subjected to repeated freeze-thaw cycles.
Independent laboratory report
A sample of this material was submitted to Analiza Białek sp. z o.o., an independent analytical laboratory in Wrocław, Poland. We did not carry out this analysis ourselves.
| Purity result | 99% |
|---|---|
| Measured content | 16.49mg (label claim 15mg, error ±0.05mg) |
| Method | RP-HPLC — BioBasic 8 (Thermo Scientific) column, linear H₂O / acetonitrile gradient with 0.1% trifluoroacetic acid, 3µl injection |
| Laboratory | Analiza Białek sp. z o.o., Wrocław, Poland |
| Report number | 100016392 |
| Analysis dates | 2026-07-28 to 2026-07-30 |
This report describes the sample submitted to the laboratory. It covers identity, purity and content only, and is not a statement of safety, efficacy or suitability for use in humans or animals.
Specification
| Compound type | GLP-1 / GIP / glucagon triple receptor agonist |
|---|---|
| Structure | 39-residue lipidated peptide |
| Molecular formula | C221H342N46O68 |
| Molecular weight | ~4731 g/mol |
| CAS number | 2381089-83-2 |
| Synonyms | LY3437943 |
| Purity | 99% — independently verified by HPLC (report 100016392) |
| Measured content | 16.49mg against a 15mg label claim |
| Form | Lyophilised powder |
| Storage | -20°C long-term; 2-8°C short-term |
Questions
What is Retatrutide supplied as?
A lyophilised powder in a sealed vial, stored frozen until dispatch. A sample from our UK stock was submitted to an independent analytical laboratory and returned 99% purity by HPLC. The full report is published on our documentation page.
Has this Retatrutide been independently tested?
Yes. A sealed 15mg vial was sent to Analiza Białek sp. z o.o., an independent analytical laboratory in Wrocław, Poland. HPLC analysis returned 99% purity, with vial content measured at 16.49mg against a 15mg label claim. The full certificate of analysis is published on the site.
What receptors does Retatrutide act on?
It is described in the research literature as a triple receptor agonist with reported activity at the GLP-1, GIP and glucagon receptors. It is supplied only as a reference material for that research.
Do you stock Retatrutide in the UK?
Yes. It is UK stocked with dispatch within 24–48 hours of confirmed payment on business days via tracked delivery.
Is Retatrutide for research use only?
Yes. It is supplied strictly for laboratory and scientific research and is not for human or animal consumption.
