Key facts at a glance
| Retatrutide sizes | 10, 20, 30 mg |
|---|---|
| Price | $69.99 (10 mg) · $109.99 (20 mg) · $149.99 (30 mg) · BOGO |
| Third-party testing | ILS Laboratories, 99.61% (Sep 2026) |
| Ships from | Houston, TX |
| Shipping | Rates at checkout · 2–5 business days |
| Payment methods | Visa, Mastercard, Amex, Discover, Apple Pay, Klarna |
| Guarantee / refunds | All sales final; replacement for verified fulfillment errors |
| Best for | Price-focused buyers who want a recent, lot-matched COA |
Pros and cons
- Product page names retatrutide and shows the current lot and COA number
- ILS COA covers purity, net content, sterility, endotoxin, heavy metals and fentanyl
- Buy-one-get-one offer: two 10 mg vials for $69.99
- Phone/text support line in addition to email
- Domain registered June 2026; Trustpilot profile has no reviews
- No legal entity or street address published
- All sales final, no cancellations, and damage claims require a full unboxing video within 7 days
- Identity confirmed by HPLC retention time only, not mass spectrometry
Bottom line
One Aminos pairs low pricing with a recent, lot-specific lab report. It is also one of the newest and least transparent businesses we have reviewed, with strict policies.
Products and pricing
Sold as “GLP-3RT” on a page titled “Retatrutide (GLP-3RT) Research Peptide”. It comes in 10 mg ($69.99), 20 mg ($109.99) and 30 mg ($149.99). A sitewide buy-one-get-one offer was running on October 19, 2026. On the 10 mg size, two vials cost $69.99 ($3.50/mg), four cost $139.98 and ten cost $349.95. The catalog has about a dozen products.
Testing
ILS Laboratories (San Diego) issued COA-2026-R1WFRA for lot ONE-RT10-091526 on September 30, 2026. That is the same lot shown on the product page. Two vials averaged 99.61% HPLC purity and 10.41 mg net content. Sterility (PCR), heavy metals and a fentanyl screen passed, and endotoxin was reported at no more than 0.05 EU/mL. Identity was confirmed by HPLC retention time against a reference standard, not by mass spectrometry. The report is posted for the 10 mg lot only.
Shipping and payment
Orders ship from Houston, TX. The policy says orders are processed within 1–2 business days, and the home page says they ship the same or next business day. Standard domestic delivery takes 2–5 business days, and expedited takes 1–3. Rates appear only at checkout. First orders may need an adult (21+) signature. Cards are processed by Stripe (Visa, Mastercard, American Express, Discover), with Apple Pay and Klarna also shown.
Policies and support
All sales are final, and orders cannot be cancelled once placed. For fulfillment errors or transit damage, buyers must email within 7 days with a full unboxing video and photos. The remedy is a replacement at the company’s discretion. Packages marked delivered are not covered. Support is by email (support@oneaminos.com) and phone/text (443) 852-0470. Support will not answer dosing or administration questions.
Reputation
The domain was registered on June 24, 2026. The Trustpilot profile was claimed in July 2026 and has 0 reviews. The site names no company entity or street address. We found no FDA warning letter or Eli Lilly lawsuit naming One Aminos.
Alternatives to One Aminos
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.