Vendor and compound
SS-31 from Northline Labs
Northline Labs lists SS-31 at $6.00 per mg, 11% over the $5.40 peer median. 1 third-party certificate for this compound from this vendor is on file, assayed by ILS Laboratories, averaging 99.60% 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 · Northline Labs profile · scores 68 of 100, rank 21 · 1 certificate for this compound · verified 5 Oct 2026
What it costs
| Vial | Listed price | Per mg | vs peer median | Listing |
|---|---|---|---|---|
| 10 mg | $59.99 | $6.00 | +11% | SS-31 – Premium Research Peptide |
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 |
|---|---|---|---|---|---|
| NLL-4091611 | 7 Jul 2026 | 99.6% | 10 mg → 10.47 mg | ILS Laboratories | Open |
ILS 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 | 89.1 | — | 1 |
| ZC Labs | 87.2 | $3.75 | 1 |
| PeptidePlugs | 82.6 | $4.00 | 7 |
| Bench Grade Peptides | 79.4 | $8.00 | 1 |
| Hydro Research Peptides | 78.7 | $3.00 | 0 |
| One Aminos | 78 | $4.50 | 1 |
| Koi Peptides | 75.1 | $5.00 | 0 |
| NeuroLabs Research | 74.6 | $5.40 | 0 |
Ordered by overall evidence score. See every vendor listing SS-31.
Questions
Is SS-31 from Northline Labs third-party tested?
Yes. 1 certificate for SS-31 from Northline Labs is on file, signed by ILS Laboratories. Each names a lot, prints the assayed mass against the labelled mass, and links to the document it was read from. ILS 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 Northline Labs?
$6.00 per milligram, from 10 mg at $59.99. The peer median across every vendor we price for SS-31 is $5.40 per mg, so this is +11% against the market. Prices are normalised per milligram so vials of different sizes compare fairly.
Is Northline Labs a good place to buy SS-31?
Northline Labs scores 68 of 100 on the published rubric and ranks 21 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.