Vendor and compound
Sermorelin from Koi Peptides
Koi Peptides lists Sermorelin at $10.00 per mg, 37% over the $7.30 peer median. 1 third-party certificate for this compound from this vendor is on file, assayed by Freedom Diagnostics Testing, averaging 99.40% purity. The cheapest listed price for Sermorelin anywhere in the index is $4.50 per mg at Next Gen Peptides.
All Sermorelin vendors · Koi Peptides profile · scores 79.8 of 100, rank 15 · 1 certificate for this compound · verified 1 Aug 2026
What it costs
| Vial | Listed price | Per mg | vs peer median | Listing |
|---|---|---|---|---|
| 10 mg | $99.95 | $10.00 | +37% | Sermorelin 10mg & 5mg |
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 |
|---|---|---|---|---|---|
| Clear | 31 May 2026 | 99.4% | 10 mg → 11.02 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 Sermorelin
| Vendor | Score | Per mg | Certificates for this compound |
|---|---|---|---|
| Next Gen Peptides | 93.8 | $4.50 | 2 |
| Ascend Science | 90.1 | $5.00 | 1 |
| Amino Club | 88.3 | $6.00 | 0 |
| Modern Aminos | 88.1 | $7.40 | 0 |
| Bench Grade Peptides | 86.8 | $5.10 | 1 |
| Polaris Peptides | 86.6 | $7.50 | 1 |
| PeptidePlugs | 86.3 | $5.50 | 1 |
| Simple Peptide | 84.9 | $7.90 | 1 |
Ordered by overall evidence score. See every vendor listing Sermorelin.
Questions
Is Sermorelin from Koi Peptides third-party tested?
Yes. 1 certificate for Sermorelin from Koi 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 Sermorelin cost at Koi Peptides?
$10.00 per milligram, from 10 mg at $99.95. The peer median across every vendor we price for Sermorelin is $7.30 per mg, so this is +37% against the market. Prices are normalised per milligram so vials of different sizes compare fairly.
Is Koi Peptides a good place to buy Sermorelin?
Koi Peptides scores 79.8 of 100 on the published rubric and ranks 15 overall, computed from its documentation rather than from opinion. For Sermorelin specifically it has 1 certificate on file. Next Gen Peptides lists it cheaper at $4.50 per mg.