Key facts at a glance
| Retatrutide sizes | 10, 20, 30, 60 mg |
|---|---|
| Price | $6.93/mg (10 mg) to $2.99/mg (60 mg) |
| Third-party testing | Vanguard Laboratory (A2LA ISO 17025), per size |
| Ships from | USA (no address) |
| Shipping | Free · USPS Priority 2–3 days |
| Payment methods | Visa, Mastercard, Amex, Discover, Zelle, Venmo |
| Guarantee / refunds | 30-day returns on unopened items; purity guarantee |
| Best for | Price-focused buyers who are comfortable with email-only support |
Pros and cons
- Low price per mg ($179.55 for 60 mg, about $2.99/mg)
- Vanguard COA for each size, with endotoxin on the 10 mg report
- Free shipping on every US order, plus free bacteriostatic water
- Product page names retatrutide and LY3437943
- No street address, phone number or legal entity
- COAs date from February 2026
- Recent 1-star Trustpilot review says the batch code did not match the COAs; no reply to negative reviews
Bottom line
Pure U.S. Peptides has low prices and publishes accredited-lab COAs for every size. The weak points are its anonymity (email only, no address) and a young, thin review record that includes an unanswered COA-mismatch complaint.
Products and pricing
The product is called “GLP3-R”, which the page calls “the catalog designation for retatrutide (LY3437943)”. Prices:
- 10 mg: $69.30 ($6.93/mg)
- 20 mg: $107.10 ($5.36/mg)
- 30 mg: $132.30 ($4.41/mg)
- 60 mg: $179.55 ($2.99/mg)
All sizes are in stock. Multi-vial packs and a “buy 5, pick 1 free” offer are also available.
Testing
Each size links to a Vanguard Laboratory certificate (A2LA certificate 6377.01.01), all reported February 19, 2026, with purity above 99.80% by HPLC:
- 10 mg, lot R26C154: 9.68 mg. Endotoxin passed (<0.05 EU/mg), and the chromatogram peak is labeled retatrutide.
- 20 mg, lot R26C815: 19.86 mg
- 30 mg, lot R26C978: 35.42 mg
- 60 mg, lot R26C364: 61.81 mg
The 10 mg page also shows a second lot label, “FL-2026-G3R10”.
Shipping and payment
Shipping is free on every US order. Orders before 2 pm ET on weekdays go out the same day by USPS Priority (2–3 business days) or UPS Ground (3–5 days). Canada costs a flat $15. Packaging is tamper-evident and insulated as needed. Payment is by Visa, Mastercard, Amex or Discover, or by Zelle or Venmo.
Policies and support
Unopened items can be returned within 30 days. Product that tests below the published purity is replaced or refunded. Transit damage reported within 7 days, with photos, gets a replacement, and wrong items are reshipped. Approved refunds take 3–5 business days. The policy does not address lost packages. Support is by email only, Monday–Friday 9 am–5 pm ET. No address, phone number or company entity is published.
Reputation
Trustpilot shows 4.5 from 27 reviews (92% five-star). The profile is on a paid subscription, has not invited reviews recently and has not replied to negative reviews. An October 11, 2026 one-star review says three products shared a batch code that is not on the site, the COAs did not match, and emails went unanswered. The domain was registered in January 2026. We found no FDA warning letter or Eli Lilly lawsuit naming the company.
Alternatives to Pure U.S. 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.