Document-level evidence
The current index contains a certificate document naming this vendor and Retatrutide, with printed fields such as date, lab, lot, or reported purity when available.
110 current listings from 40 vendors, ranked by observed cost per milligram and checked for a COA indexed to the same vendor + peptide pair.
$/mg = observed price ÷ vial size. Prices and stock can change; confirm on the vendor site. COA “matched” means same vendor + peptide, not proof that the listing is the tested batch. Some outbound links are affiliate links.
The current index contains a certificate document naming this vendor and Retatrutide, with printed fields such as date, lab, lot, or reported purity when available.
The document does not establish authenticity, chain of custody, vial contents, sterility, endotoxin status, safety, efficacy, or overall vendor quality.
Across 110 current listings from 40 tracked vendors, Retatrutide ranges from $3.33/mg to $118/mg, averaging $10/mg. The cheapest observed listing is Raven's Nest at $100 for a 30mg vial.
The lowest observed Retatrutide price is $3.33 per mg at Raven's Nest, about 68% below the current listing average. Cost-per-mg (price ÷ vial size) makes different vial sizes comparable. Confirm the current price and stock on the vendor site.
Retatrutide has current observations from 40 research-peptide vendors we track, including Raven's Nest, Peptide Supply Co, Blackline Scientific. This page compares 110 listings by cost-per-mg and links to the vendor. Some outbound links are affiliate links.
21 of the 40 tracked vendors have a current indexed COA document matched to the same vendor and Retatrutide; 20 of those documents have a printed test date within 18 months. A match identifies document evidence for the pair. It does not link a listing to the tested batch or establish authenticity, sterility, safety, or vendor quality.
The listings compared here are sold as research-use products, not as approved medicines. Rules vary by product and jurisdiction. This page is informational, not medical or legal advice. Check the listing and your local regulations.