Retatrutide Cost: Research Vendor Price Comparison
Research-grade retatrutide costs roughly $2.80 to $7.50 per milligram in 2026, depending on vial size and vendor — the more milligrams per order, the lower the per-mg cost.
Prices checked July 25, 2026 · 8 in-stock options across 2 COA-verified vendors
$2.83/mg — Peptide Partners
GLP-3 Retatrutide — 20× 24mg vials (480mg)
Retatrutide is an investigational triple-agonist peptide. It has no FDA-approved product, no manufacturer list price, and no insurance coverage — so the only real-world pricing comes from research-chemical suppliers, quoted per milligram of raw peptide, not as a monthly treatment cost.
The table below compares live per-mg pricing across the COA-verified vendors we track, sorted by the cheapest effective cost per mg after any verified discount. Larger multi-vial kits consistently bring the per-mg price down.
Advertiser links — we may earn a commission at no extra cost to you. Rankings are by value and testing, never who pays us.
| Vendor | Option | Price | Per mg | |
|---|---|---|---|---|
Best value Peptide Partners COA-verified | GLP-3 Retatrutide — 20× 24mg vials (480mg) | $1,512.00 $1,360.80 10% code | $2.83/mg | Shop |
Peptide Partners COA-verified | GLP-3 Retatrutide — 10× 24mg vials (240mg) | $880.00 $792.00 10% code | $3.30/mg | Shop |
Peptide Partners COA-verified | GLP-3 Retatrutide — 5× 24mg vials (120mg) | $480.00 $432.00 10% code | $3.60/mg | Shop |
Offline Peptides COA-verified | GLP-3R — 50mg vial | $199.00 | $3.98/mg | Shop |
Peptide Partners COA-verified | GLP-3 Retatrutide — 2× 24mg vials (48mg) | $230.00 $207.00 10% code | $4.31/mg | Shop |
Offline Peptides COA-verified | GLP-3R — 30mg vial | $139.00 | $4.63/mg | Shop |
Offline Peptides COA-verified | GLP-3R — 20mg vial | $105.00 | $5.25/mg | Shop |
Offline Peptides COA-verified | GLP-3R — 10mg vial | $75.00 | $7.50/mg | Shop |
Sorted by effective cost per mg after our verified discount. Retatrutide for research use only.
Why Retatrutide prices vary
The biggest swing is vial size: a single small vial can run over $7/mg, while a 20-vial kit from the same tier of vendor can fall below $3/mg. Always compare on cost per mg, not sticker price.
The second factor is testing. A price that looks too good often reflects unverified purity. We only list vendors that publish independent, third-party COAs (Certificates of Analysis) — because underdosed or impure material is expensive at any price. Cheapest and best-value are not always the same row, and our ranking weighs verification, not just the number.
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Retatrutide cost — FAQ
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