Key facts at a glance
| Retatrutide sizes | 12 mg and 24 mg vials (multi-packs) |
|---|---|
| Price | 2×24 mg $230 (≈$4.79/mg) |
| Third-party testing | Chromate, TrustPointe, Kovera; Finnrick 94% |
| Ships from | Not disclosed |
| Shipping | Calculated at checkout |
| Payment methods | Not disclosed on site |
| Guarantee / refunds | No refunds after shipment; 48h damage claims |
| Best for | Buyers focused on testing depth who accept regulatory risk |
Pros and cons
- Public library of retatrutide batches from 2025-07 to 2026-10
- Current batch RT2623 at 99.64% with endotoxin, heavy metals and sterility
- Independent tester Finnrick rates its retatrutide 94% across 32 tests
- Low price per mg on multi-vial packs
- FDA warning letter dated August 24, 2026
- Shipping origin, speed and payment methods not disclosed
- Trustpilot profile removed
Bottom line
On testing alone, Peptide Partners is among the strongest vendors we reviewed. Its overall score is held back by an FDA warning letter and by how little it discloses about shipping and payment.
Products and pricing
“GLP-3 Retatrutide” (CAS 2381089-83-2). 24 mg vials: 2 for $230, 5 for $480, 10 for $880. 12 mg vials: 2 for $124, 5 for $290, 10 for $545.
Testing
Current batch RT2623: 99.64% (Chromate, October 1, 2026), endotoxin, heavy metals and sterility conforming. The certification library lists batches from July 2025 to October 2026 at 99.33–99.94%, from Chromate, TrustPointe, Kovera and BioRegen. Finnrick rates the product 94% from 32 tests.
Shipping and payment
Shipping origin, carrier and speed are not stated; cost is calculated at checkout. Payment methods are not listed on the site.
Policies and support
Full refund only if cancelled before shipment. Damaged or incorrect items must be reported within 48 hours with photos; one replacement is at the vendor’s discretion. Email support only.
Regulatory history and reputation
The FDA issued a warning letter to Peptide Partners LLC on August 24, 2026, naming its “GLP-3 Reta” product; the product was still listed on October 19, 2026. Its Trustpilot profile has been removed. Domain registered March 2025.
Alternatives to Peptide Partners
Scores use the weighted criteria explained on How We Rate. Vendors change prices and policies often — confirm details on the vendor's site before ordering. Retatrutide is an investigational compound and is not FDA-approved; see our medical disclaimer.