Key facts at a glance
| Retatrutide sizes | 5, 10 mg |
|---|---|
| Price | $99.99 (5 mg) · $169 (10 mg) |
| Third-party testing | Chromate COA, 99.971% (Jul 2025) |
| Ships from | Los Angeles, CA |
| Shipping | $18 flat quoted at checkout · USPS Priority |
| Payment methods | Policy says major cards; checkout showed crypto and bank transfer |
| Guarantee / refunds | 30-day money back on unopened items |
| Best for | Buyers who prioritize an established seller with phone support and a money-back policy |
Pros and cons
- Domain registered in 2019; Trustpilot 4.5 from 55 reviews
- Phone support (323) 990-8140 plus email
- 30-day money-back guarantee on unopened products
- Large catalog that includes Hospira bacteriostatic water
- Expensive: $16.90–$20 per mg
- Only COA shown is from July 2025, with the client name blacked out and no batch number
- Product page gives human dosing guidance and health claims, a red flag for regulators
- Published free-shipping-over-$100 policy was not applied at our test checkout
Bottom line
Singular Biotech has a longer track record than most stores we review and a real money-back policy. It charges much more than newer vendors and documents its retatrutide poorly. Its product page also describes human use, which this kind of seller is not supposed to do.
Products and pricing
Listed as “GLP-3 Peptide (Retatrutide Analog Compound)” and described as a GLP-1/GIP/glucagon “triple G agonist”. The page does not give the CAS number or LY code. 5 mg costs $99.99 ($20/mg) and 10 mg costs $169 ($16.90/mg). A buy-2-get-1 offer is running, and the product carries a “Members only” tag. Separate wholesale listings sell unbranded boxes of 10 to resellers, but single vials can be bought at retail.
Testing
The COA tab shows a single Chromate certificate (#25849) for “Retatrutide 10mg”, analyzed July 10, 2025, at 99.971% HPLC purity and 10.48 mg content. Identity was checked by RP-HPLC with UV detection only. The batch is listed as “N/A” and the client name is blacked out, so the report cannot be tied to a vial sold today. The product page says COAs are “available upon request.”
Shipping and payment
The product page says it ships USPS Priority Mail from Los Angeles, and orders are dispatched within 1–3 business days. The shipping policy promises free shipping on US orders over $100. Our test checkout quoted an $18 flat rate on both a $99.99 cart and a $169 cart. The policy says “all major credit cards” are accepted. The checkout offered Coinbase (crypto), bank transfer and one other method.
Policies and support
The return policy offers a 30-day money-back guarantee: return unopened items within 30 days for a refund. Opened vials are not refundable, and the buyer pays return shipping. Support is by phone (323) 990-8140, by email ([email protected]) and through a contact form.
Reputation
The domain was registered on September 22, 2019. Trustpilot shows a 4.5 TrustScore from 55 reviews (92% five-star). Complaints mostly concern slow dispatch and backorders, and the company replies to negative reviews. The footer gives “Los Angeles, CA 90068”, while the contact page lists Singular Biotech, LLC at an Albuquerque, NM address. We found no FDA warning letter or Eli Lilly lawsuit naming Singular Biotech. Its human dosing language is the kind of content FDA has cited in letters to other peptide sellers.
Alternatives to Singular Biotech
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.