Key facts at a glance
| Retatrutide sizes | 10, 30, 60 mg |
|---|---|
| Price | $11.00/mg (10 mg) to $5.42/mg (60 mg) |
| Third-party testing | Freedom Diagnostics, 99.8% (Oct 2026) |
| Ships from | Santa Barbara, CA |
| Shipping | FedEx 2-Day · free over $150 · else $9.95 |
| Payment methods | Not found |
| Guarantee / refunds | 30-day returns on sealed items |
| Best for | Buyers who want a recent COA and a returns policy, aware of the regulatory history |
Pros and cons
- Recent retatrutide COA (tested October 6, 2026)
- Endotoxin and microbial PCR results
- 30-day returns with prepaid label once approved
- Domain registered January 2024
- FDA warning letter (December 10, 2024) naming retatrutide
- Independent tester reports a 37% pass rate on other products
- Trustpilot profile removed; no email or phone listed
Bottom line
Prime Peptides has fresh testing and good policies, but its regulatory history and third-party test results on other products pull its score down.
Products and pricing
Retatrutide at $11.00/mg (10 mg, $110), $7.67/mg (30 mg) and $5.42/mg (60 mg).
Testing
Current lot 26093003 tested 99.8% by HPLC at Freedom Diagnostics on October 6, 2026, with endotoxin and microbial PCR passing. The site names four labs (Freedom Diagnostics, Horizon Analytical, Janoshik, Bioviridian). Finnrick’s vendor report shows a 37% pass rate (7 of 19 tests) on other products; it lists no retatrutide tests.
Shipping
From Santa Barbara, CA by FedEx 2-Day, weekdays by 2 pm PT. Free over $150, otherwise $9.95.
Policies and support
30-day returns for unopened, sealed items, with refunds to the original payment method. Support by live chat and contact form, Monday–Friday 10 am–3 pm PT.
Regulatory history and reputation
The FDA sent warning letter 695156 on December 10, 2024 to Prime Vitality, Inc. dba Prime Peptides, naming semaglutide and retatrutide. The vendor still sells retatrutide. Its Trustpilot profile has been removed.
Alternatives to Prime Peptides
Every vendor is assessed against the same 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.