Vendor and compound
SS-31 from One Aminos
One Aminos lists SS-31 at $4.50 per mg, 17% under the $5.40 peer median. 1 third-party certificate for this compound from this vendor is on file, assayed by United Laboratories, 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 · One Aminos profile · scores 85.6 of 100, rank 8 · 1 certificate for this compound · verified 4 Oct 2026
What it costs
| Vial | Listed price | Per mg | vs peer median | Listing |
|---|---|---|---|---|
| 10 mg | $44.99 | $4.50 | -17% | 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.
What the laboratory found
| Lot | Assayed | Purity | Label → assayed | Laboratory | Record |
|---|---|---|---|---|---|
| ONE-SS10-091826 | 18 Sept 2026 | 99.587% | 10 mg → 11.15 mg | United Laboratories | Open |
United Laboratories 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 SS-31
| Vendor | Score | Per mg | Certificates for this compound |
|---|---|---|---|
| Origin Labs | 94.2 | — | 1 |
| PeptidePlugs | 90.7 | $4.00 | 7 |
| Ascend Science | 88.9 | $5.25 | 0 |
| ZC Labs | 86.9 | $3.75 | 1 |
| Hydro Research Peptides | 85.9 | $3.00 | 0 |
| Bench Grade Peptides | 84.2 | $8.00 | 1 |
| NeuroLabs Research | 79 | $5.40 | 0 |
| Ascension Peptides | 76.2 | $8.00 | 1 |
Ordered by overall evidence score. See every vendor listing SS-31.
Questions
Is SS-31 from One Aminos third-party tested?
Yes. 1 certificate for SS-31 from One Aminos is on file, signed by United Laboratories. Each names a lot, prints the assayed mass against the labelled mass, and links to the document it was read from. United Laboratories also publishes a lookup, so the report can be confirmed at the laboratory rather than taken from the vendor.
How much does SS-31 cost at One Aminos?
$4.50 per milligram, from 10 mg at $44.99. The peer median across every vendor we price for SS-31 is $5.40 per mg, so this is -17% against the market. Prices are normalised per milligram so vials of different sizes compare fairly.
Is One Aminos a good place to buy SS-31?
One Aminos scores 85.6 of 100 on the published rubric and ranks 8 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.