Vendor and compound
Retatrutide from Prime Peptides
Prime Peptides lists Retatrutide at $11.00 per mg, 49% over the $7.40 peer median. 1 third-party certificate for this compound from this vendor is on file, assayed by Freedom Diagnostics Testing, averaging 99.97% purity. The cheapest listed price for Retatrutide anywhere in the index is $2.90 per mg at ZC Labs.
All Retatrutide vendors · Prime Peptides profile · scores 74.4 of 100, rank 14 · 1 certificate for this compound · verified 28 Sept 2026
What it costs
| Vial | Listed price | Per mg | vs peer median | Listing |
|---|---|---|---|---|
| 10 mg | $110 | $11.00 | +49% | Retatrutide |
Read from the vendor’s own store and normalised per milligram, because a smaller vial at a lower sticker price is usually the dearer peptide.
What the laboratory found
| Lot | Assayed | Purity | Label → assayed | Laboratory | Record |
|---|---|---|---|---|---|
| 26071002 | 16 Jul 2026 | 99.97% | 30 mg → 36.37 mg | Freedom Diagnostics Testing | Open |
Freedom Diagnostics Testing publishes a lookup, so these reports can be confirmed at the laboratory rather than taken from the vendor. How to check one.
Other vendors selling Retatrutide
| Vendor | Score | Per mg | Certificates for this compound |
|---|---|---|---|
| Origin Labs | 89.1 | — | 5 |
| Next Gen Peptides | 87.7 | $4.00 | 16 |
| ZC Labs | 87.2 | $2.90 | 5 |
| Amino Club | 86.1 | $7.00 | 3 |
| Bench Grade Peptides | 79.4 | $3.90 | 4 |
| Hydro Research Peptides | 78.7 | — | 1 |
| Stealth Research Labs | 78.1 | $7.00 | 1 |
| One Aminos | 78 | $7.00 | 2 |
Ordered by overall evidence score. See every vendor listing Retatrutide.
Questions
Is Retatrutide from Prime Peptides third-party tested?
Yes. 1 certificate for Retatrutide from Prime Peptides is on file, signed by Freedom Diagnostics Testing. Each names a lot, prints the assayed mass against the labelled mass, and links to the document it was read from. Freedom Diagnostics Testing also publishes a lookup, so the report can be confirmed at the laboratory rather than taken from the vendor.
How much does Retatrutide cost at Prime Peptides?
$11.00 per milligram, from 10 mg at $110. The peer median across every vendor we price for Retatrutide is $7.40 per mg, so this is +49% against the market. Prices are normalised per milligram so vials of different sizes compare fairly.
Is Prime Peptides a good place to buy Retatrutide?
Prime Peptides scores 74.4 of 100 on the published rubric and ranks 14 overall, computed from its documentation rather than from opinion. For Retatrutide specifically it has 1 certificate on file. ZC Labs lists it cheaper at $2.90 per mg.