Vendor and compound
SS-31 from Koi Peptides
Koi Peptides lists SS-31 at $5.00 per mg, 7% under the $5.40 peer median. No third-party certificate for SS-31 from Koi Peptides has been located, so nothing here establishes what is in the vial. The cheapest listed price for SS-31 anywhere in the index is $3.00 per mg at Hydro Research Peptides.
All SS-31 vendors · Koi Peptides profile · scores 79.8 of 100, rank 15 · 0 certificates for this compound · verified 1 Aug 2026
What it costs
| Vial | Listed price | Per mg | vs peer median | Listing |
|---|---|---|---|---|
| 10 mg | $49.95 | $5.00 | -8% | SS-31 (Elamipretide) 10mg |
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
No third-party certificate for SS-31 from Koi Peptides has been located.
That is a statement about the public record, not an accusation. The vendor may test and not publish, or publish somewhere we have not read. What it means for a buyer is that the price above is the only thing established here, and price says nothing about what is in the vial.
Vendors whose certificates you can check yourself lists the ones where that gap is closed.
Other vendors selling SS-31
| Vendor | Score | Per mg | Certificates for this compound |
|---|---|---|---|
| Ascend Science | 90.1 | $5.25 | 1 |
| Origin Labs | 87.7 | — | 1 |
| Bench Grade Peptides | 86.8 | $8.00 | 1 |
| Polaris Peptides | 86.6 | $5.16 | 1 |
| Hydro Research Peptides | 86.5 | $3.00 | 0 |
| PeptidePlugs | 86.3 | $4.00 | 6 |
| ZC Labs | 83.2 | $3.75 | 1 |
| Ascension Peptides | 79 | $8.00 | 1 |
Ordered by overall evidence score. See every vendor listing SS-31.
Questions
Is SS-31 from Koi Peptides third-party tested?
Not so far as this index can establish. No third-party certificate for SS-31 from Koi Peptides has been located. The vendor may test and not publish; what can be said is that nothing public establishes the contents of a vial.
How much does SS-31 cost at Koi Peptides?
$5.00 per milligram, from 10 mg at $49.95. The peer median across every vendor we price for SS-31 is $5.40 per mg, so this is -7% against the market. Prices are normalised per milligram so vials of different sizes compare fairly.
Is Koi Peptides a good place to buy SS-31?
Koi Peptides scores 79.8 of 100 on the published rubric and ranks 15 overall, computed from its documentation rather than from opinion. For SS-31 specifically no certificate is on file, which is the gap to weigh. Hydro Research Peptides lists it cheaper at $3.00 per mg.