Research use only — not for human or veterinary use
Buy Retatrutide (LY3437943) — All Eight Research Sizes
Research-grade retatrutide in vials from 5mg to 100mg, each verified to ≥99.8% purity by independent HPLC with identity confirmed by mass spectrometry, each supplied with its batch-specific Certificate of Analysis. Orders placed before 2pm ET ship the same business day from Jacksonville, Florida, and shipping is free over $300.
Compare all retatrutide sizes
Live pricing and stock status. The cost-per-milligram column is the honest value comparison — it falls steadily as vial size increases.
| Vial size | Price | Cost per mg | Stock | Best suited to | Order |
|---|---|---|---|---|---|
| 5 mg | $64.00 | $12.80 / mg | In stock | Triple-receptor pilots and titration work | 5mg vial → |
| 10 mg | $118.00 | $11.80 / mg | In stock | Short bench protocols and stability screening | 10mg vial → |
| 15 mg | $147.00 | $9.80 / mg | In stock | Multi-assay receptor signaling studies | 15mg vial → |
| 30 mg | $220.00 | $7.33 / mg | In stock | Stability-over-time and lyophilisate research | 30mg vial → |
| 40 mg | $250.00 | $6.25 / mg | In stock | Triple-pathway signaling models | 40mg vial → |
| 60 mg | $300.00 | $5.00 / mg | In stock | Tri-receptor activation studies, formulation work | 60mg vial → |
| 80 mg | $390.00 | $4.88 / mg | In stock | Programme-scale tri-agonist research | 80mg vial → |
| 100 mgBest value | $479.00 | $4.79 / mg | In stock | Programme-scale research and analytical batches | 100mg vial → |
Prices are pulled from our live catalogue. Every listing includes bacteriostatic water for reconstitution.
Choosing a vial size
The trade-off is unit cost against the in-use window. A larger vial is always cheaper per milligram, but once it is reconstituted the clock starts: refrigerated solution is generally treated as usable for about 30 days. Buying 100mg for work that consumes 8mg a month means most of the material sits as unreconstituted powder — which is fine, since the lyophilate is stable frozen, but only if you can hold it that way.
- 5mg and 10mg — pilot studies, method development, single-assay work, and any protocol where the reconstituted window matters more than unit price.
- 15mg to 40mg — multi-week bench arcs and repeat-assay work with a meaningful drop in cost per milligram.
- 60mg to 100mg — programme-scale research and analytical batches; the lowest cost per milligram we offer.
The dosage chart shows how many draws each vial size yields at common concentrations, which is usually the fastest way to decide.
How we verify every batch
Each production batch is analysed by independent laboratory HPLC for purity and by mass spectrometry for identity, and the resulting Certificate of Analysis is specific to the batch in your vial rather than a representative sample from a previous run. Material is synthesised by our Swiss pharmaceutical-grade manufacturer, held under refrigeration through fulfilment, and shipped in insulated packaging.
Shipping and ordering
- Orders before 2pm ET ship the same business day from Jacksonville, Florida.
- Domestic delivery is typically 1–2 business days.
- Free shipping on orders over $300.
- Cold-chain insulated packaging on every peptide order.
- Bacteriostatic water is included with each retatrutide listing.
Order retatrutide research vials
Pick a size on the product page — the buy box carries live stock and the batch COA for the vial you receive.
Buying retatrutide — FAQ
Where can you buy retatrutide for research?
Dr Jays Peptides supplies research-grade retatrutide in eight vial sizes from 5mg to 100mg. Every order ships from our Jacksonville, Florida facility with a batch-specific Certificate of Analysis. Research use only — not for human or veterinary use.
How much does retatrutide cost?
Price scales with vial size, and the cost per milligram falls as the vial gets larger. The table on this page shows live pricing and stock status for all eight sizes along with the per-milligram figure so the value comparison is explicit.
What purity is your retatrutide?
Every batch is verified to ≥99.8% purity by independent HPLC analysis with identity confirmed by mass spectrometry, and the batch-specific Certificate of Analysis is supplied with the order.
Which retatrutide vial size should a laboratory choose?
Smaller 5mg and 10mg vials suit pilot and single-assay work where the reconstituted in-use window matters more than unit cost. Larger 60mg to 100mg vials give the lowest cost per milligram for programme-scale work, provided the material can be consumed within the storage window.
How is retatrutide shipped?
Orders placed before 2pm ET ship the same business day from Jacksonville, Florida in cold-chain packaging. Domestic delivery is typically 1–2 business days, and free shipping applies over $300.
Is retatrutide legal to buy?
Retatrutide is an investigational compound that is not approved by the FDA for human or veterinary use. It may be purchased for in vitro laboratory research by qualified professionals, who are responsible for compliance with applicable local regulations.
More retatrutide research resources
All products and information on this page are supplied strictly for in vitro laboratory research by qualified professionals. Retatrutide is an investigational compound and is not approved by the FDA for human or veterinary use. The figures here are reconstitution arithmetic, not dosing guidance — we do not provide therapeutic recommendations.