In short: what you are ordering
Retatrutide (research code LY3437943) is a lyophilised peptide we supply as laboratory material. Every vial comes from a lot with an accompanying HPLC analysis, and the lot number is printed on the label so it stays traceable. You are not ordering a medicine: retatrutide holds no marketing authorisation anywhere, and we sell it solely for in-vitro research.
Price per milligram
Peptides are priced per vial, but the comparison that means anything is the price per milligram — which varies sharply between vial sizes and between suppliers. These are our current prices:
| Vial | Price | Per mg |
|---|---|---|
| 5 mg | € 49,95 | € 9,99 |
| 10 mg | € 79,99 | € 8,00 |
| 20 mg | € 139,00 | € 6,95 |
| 40 mg | € 229,00 | € 5,73Lowest |
Prices are read straight from the catalogue and include VAT. Only sizes currently in stock are shown. Shipping is free from €75.
What to check before you order
The price per milligram says nothing about what is in the vial. These are the six points on which suppliers in this segment genuinely differ — ours included.
A lot number you can trace
An analysis without a lot number cannot be tied to the vial in your hand. Check that the lot on the label matches the lot on the certificate of analysis.
An HPLC figure with context
'≥99%' without a chromatogram, a date and a stated method is a marketing line, not a measurement. A usable CoA shows the peak, the retention time and the laboratory that ran it.
Mass spectrometry, not purity alone
Purity tells you how much of the sample is a single compound. It does not tell you which compound. Identity requires a mass spectrum matching the expected molecular weight.
Storage conditions and shipping form
Lyophilised peptide is briefly stable at room temperature but belongs in cool, dry, dark storage. A supplier that says nothing about this has probably arranged nothing for it either.
A verifiable seller
A chamber-of-commerce number, a VAT number and a registered address make a company traceable. A shop offering only a contact form and a WhatsApp number is not.
What the seller promises
A vendor that claims to sell research material while talking about weight, dosing or results is in practice selling something other than what the paperwork says. That is precisely what the Dutch health inspectorate acted on in 2026.
Specifications of the current lot
These values come straight from the product catalogue and change with the lot we are shipping at the time.
- Lot number
- PL-2701
- Purity
- ≥ 99.3% HPLC
- Form
- Lyophilised powder
- Molecular weight
- 4731.42 g/mol
- Storage
- −20 °C, dry and dark
Per-lot analyses are published on our lab page.
How ordering and delivery work
Payment is by iDEAL. Orders ship lyophilised and discreetly packaged, with a track-and-trace code as soon as the label is created. Shipping is free from €75.
We ship throughout the European Union. After processing, delivery normally takes 1–2 working days within the Netherlands and Belgium and 2–5 working days elsewhere in the EU. Delivery times are indicative and vary by destination and carrier.
What retatrutide is not for
Retatrutide is supplied exclusively for in-vitro laboratory research. It is not intended for human or animal consumption, not for diagnostic use, and not for any therapeutic application. We provide no dosing, no administration guidance and no statements about effect or outcome. Questions about authorised medicines in this class belong with a doctor or pharmacist, not with an online shop.
Frequently asked questions
Is buying retatrutide permitted?
Retatrutide is not an authorised medicine and may not be offered or used as one. It is traded as research material for laboratory use. We supply it on that basis alone and make no therapeutic claim of any kind.
Do I get a certificate of analysis with my order?
A CoA with HPLC purity and identity confirmation is available for every lot we sell. The lot number on the vial matches the number on the certificate, so the analysis traces back to the vial you receive.
How quickly does an order arrive?
After processing, delivery normally takes 1–2 working days within the Netherlands and Belgium and 2–5 working days elsewhere in the European Union. Every shipment carries a track-and-trace code. Delivery times are indicative.
How can I pay?
Payment is by iDEAL. You are charged in euros including VAT, and shipping is free from €75.
How do I store a lyophilised vial?
Unopened and lyophilised at −20 °C, dry and dark. Brief exposure to room temperature in transit is normal for the freeze-dried powder. The article on reconstitution and storage covers this in detail.
What is the difference between retatrutide and semaglutide?
The number of receptors they target: semaglutide one (GLP-1), tirzepatide two (GIP and GLP-1) and retatrutide three (GIP, GLP-1 and the glucagon receptor). Semaglutide and tirzepatide are authorised medicines in the EU; retatrutide is not.
Further reading
See also Retatrutide · vs semaglutide · CoA · reconstitution
For in-vitro laboratory research only. Not for human consumption. Not medical advice.
Last updated: August 2026