Vendor and compound
SS-31 from Ascend Science
Ascend Science lists SS-31 at $5.25 per mg, 3% under the $5.40 peer median. 1 third-party certificate for this compound from this vendor is on file, assayed by Kovera Labs and/or ILS Labs, averaging 99.59% purity. The cheapest listed price for SS-31 anywhere in the index is $3.00 per mg at Hydro Research Peptides.
All SS-31 vendors · Ascend Science profile · scores 90.1 of 100, rank 2 · 1 certificate for this compound · verified 18 Aug 2026
What it costs
| Vial | Listed price | Per mg | vs peer median | Listing |
|---|---|---|---|---|
| 10 mg | $52.5 | $5.25 | -3% | SS-31 |
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. CodePEPINDEX· 15% off applies at checkout.
What the laboratory found
| Lot | Assayed | Purity | Label → assayed | Laboratory | Record |
|---|---|---|---|---|---|
| AS-SS10-2 | 8 Aug 2026 | 99.59% | 50 mg → 11.15 mg | Kovera Labs and/or ILS Labs | Open |
Other vendors selling SS-31
| Vendor | Score | Per mg | Certificates for this compound |
|---|---|---|---|
| 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 |
| Koi Peptides | 79.8 | $5.00 | 0 |
| Ascension Peptides | 79 | $8.00 | 1 |
Ordered by overall evidence score. See every vendor listing SS-31.
Questions
Is SS-31 from Ascend Science third-party tested?
Yes. 1 certificate for SS-31 from Ascend Science is on file, signed by Kovera Labs and/or ILS Labs. Each names a lot, prints the assayed mass against the labelled mass, and links to the document it was read from.
How much does SS-31 cost at Ascend Science?
$5.25 per milligram, from 10 mg at $52.5. The peer median across every vendor we price for SS-31 is $5.40 per mg, so this is -3% against the market. Prices are normalised per milligram so vials of different sizes compare fairly.
Is Ascend Science a good place to buy SS-31?
Ascend Science scores 90.1 of 100 on the published rubric and ranks 2 overall, computed from its documentation rather than from opinion. For SS-31 specifically it has 1 certificate on file. Hydro Research Peptides lists it cheaper at $3.00 per mg.