Retatrutide 20mg vial
Retatrutide 20mg is a 20mg lyophilized vial research peptide with 99.712% purity by HPLC (batch RE20-0121), supplied with a batch-matched COA, in stock and dispatched from the EU within 24 hours on working days.
Limited-time price
- Content
- 20mg
- Purity
- 99.712%
- COA for this batch
- Included
Number of vials
Batch RE20-0121, tested 30 Jan 2026, 99.712% purity
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- Dispatched within 24 hours on working days
- Delivery in 1 to 4 working days across the EU and Monaco
- Discreet packaging: plain outer box, no product names or branding on the outside. A neutral billing name on your card statement, no product names.
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What is Retatrutide 20mg?
Retatrutide research peptide in a 20 mg lyophilized vial for larger laboratory study batches.
Retatrutide, also referenced in the literature as LY3437943, is supplied here as a 20 mg lyophilized research vial. It is a synthetic single-molecule compound investigated across the GIP, GLP-1 and glucagon receptor systems, including receptor-signalling interactions in cellular and preclinical research. The 20 mg vial provides more material for larger study batches while preserving researcher control over the concentration prepared in the laboratory. Store the unopened vial at -20°C and record reconstitution and storage conditions consistently. For research purposes only, not for human consumption.
Specifications
- Purity
- 99.712%
- Physical Form
- Lyophilized powder
- Vial Size
- 20mg
- Storage
- -20°C
- Recommended Solvent
- Bacteriostatic water (0.9% benzyl alcohol)
- Reconstitution
- Add the solvent slowly along the inside wall of the vial and swirl gently; do not shake.
- Appearance
- White to off-white lyophilized powder
- Shelf Life
- 24 months unopened at -20°C
What does the COA for this batch show?
Retatrutide
99.712% pureMeasured 22.48 mg vs labelled 20mg.
- Compound tested
- Retatrutide
- Label
- 20mg
- Measured mass
- 22.48 mg
- Purity
- 99.712%
- Batch
- RE20-0121
- Test date
- 30 January 2026
Independent third-party analysis of the batch listed above. For research purposes only.
What is Retatrutide 20mg studied for?
Studied in the context of
- Retatrutide, also referenced in the literature as LY3437943, is supplied here as a 20 mg lyophilized research vial.
- It is a synthetic single-molecule compound investigated across the GIP, GLP-1 and glucagon receptor systems, including receptor-signalling interactions in cellular and preclinical research.
- The 20 mg vial provides more material for larger study batches while preserving researcher control over the concentration prepared in the laboratory.
- Store the unopened vial at -20°C and record reconstitution and storage conditions consistently.
How is Retatrutide 20mg stored and handled?
Storage
Store lyophilized vials at -20°C, protected from light. Once reconstituted, refrigerate at 2-8°C and use within the recommended window.
Reconstitution
Use bacteriostatic water; add slowly down the inside wall of the vial. Swirl to dissolve, never shake. See the in-house peptide calculator for concentration (mg/ml) and syringe units (IU on a U-100 syringe).
For research use only
Not for human or veterinary consumption. Handle in accordance with your institution's laboratory safety protocols.
For research purposes only. Not for human consumption.
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Reviews cover packaging, delivery and documentation. Products are for laboratory research only; reviews contain no health or use claims.
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Before you order
Read before you order
All research guides- Retatrutide: What the Current Research ShowsRetatrutide (LY3437943) is an investigational triple receptor agonist studied at the GIP, GLP-1 and glucagon receptors. Published phase 2 work and later reviews describe the mechanism, while long term outcome data is not available. Material supplied by Vitality Peps is for in vitro laboratory research only.7 min read
- Where to Buy Research Peptides in Europe: A 2026 Buyer's ChecklistThe safest way to buy research peptides in Europe is from a supplier that stocks in the EU, publishes an independent lab report for each batch, ships in discreet tracked packaging, accepts regulated payment methods and states clearly that the products are for research use only. Ordering inside the EU avoids customs handling entirely.7 min read
- How to Read a Peptide COA (Certificate of Analysis)A peptide certificate of analysis shows what an independent laboratory found in one specific batch: identity confirmed by mass spectrometry, purity measured by HPLC, and the measured quantity against the labelled amount. Read it by checking the batch reference against your vial first, then the identity result, then the purity figure and the test date.6 min read
- How to Store and Handle Research PeptidesLyophilised research peptides are stored in the refrigerator at 2 to 8 °C, or frozen at -20 °C for longer storage, sealed and protected from light. After reconstitution with [bacteriostatic water](/product/bacteriostatic-water-10ml) the solution is kept refrigerated, never shaken, and never refrozen.5 min read
- What your vial should look likeA sealed research peptide vial normally holds a white to off-white lyophilized cake or powder under an intact stopper and crimp cap. Pre-filled pens and nasal spray kits arrive sealed, with their documented appearance on the product page. Appearance never proves identity or purity; the COA for the batch does.4 min read
References and further reading
Published literature about this compound, listed for context only. Nothing here describes a use in humans.
- 1.Wilding et al. (2021). Once-weekly semaglutide in adults with overweight or obesity. NEJM. PMID: 33567185 (pubmed.ncbi.nlm.nih.gov)
- 2.Singh et al. (2021). Wegovy (semaglutide): a new weight loss drug. J Investig Med. PMID: 34706925 (pubmed.ncbi.nlm.nih.gov)
- 3.Jastreboff et al. (2022). Tirzepatide once weekly for the treatment of obesity. NEJM. PMID: 35658024 (pubmed.ncbi.nlm.nih.gov)
- 4.Look et al. (2025). Body composition changes with tirzepatide in SURMOUNT-1. Diabetes Obes Metab. PMID: 39996356 (pubmed.ncbi.nlm.nih.gov)
- 5.Jastreboff et al. (2023). Retatrutide for obesity, a phase 2 trial. NEJM. PMID: 37366315 (pubmed.ncbi.nlm.nih.gov)
- 6.Doggrell (2023). Retatrutide showing promise in obesity. Expert Opin Investig Drugs. PMID: 37947489 (pubmed.ncbi.nlm.nih.gov)
1× Retatrutide 20mg
€163.95