Vendor and compound
PT-141 from Northline Labs
Northline Labs lists PT-141 at $9.00 per mg, 100% over the $4.50 peer median. 1 third-party certificate for this compound from this vendor is on file, assayed by ILS Laboratories, averaging 99.25% purity. The cheapest listed price for PT-141 anywhere in the index is $2.20 per mg at Eternal Peptides.
All PT-141 vendors · Northline Labs profile · scores 74.4 of 100, rank 21 · 1 certificate for this compound · verified 1 Aug 2026
What it costs
| Vial | Listed price | Per mg | vs peer median | Listing |
|---|---|---|---|---|
| 10 mg | $89.99 | $9.00 | +100% | PT-141 – 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-2061592 | 3 May 2026 | 99.25% | 10 mg → 9.79 mg | ILS Laboratories | Open |
Other vendors selling PT-141
| Vendor | Score | Per mg | Certificates for this compound |
|---|---|---|---|
| Next Gen Peptides | 93.8 | $2.50 | 2 |
| Ascend Science | 90.1 | $4.20 | 0 |
| Amino Club | 88.3 | $3.00 | 0 |
| Modern Aminos | 88.1 | $4.10 | 0 |
| Origin Labs | 87.7 | — | 1 |
| Bench Grade Peptides | 86.8 | $4.60 | 2 |
| Polaris Peptides | 86.6 | $4.00 | 0 |
| PeptidePlugs | 86.3 | — | 3 |
Ordered by overall evidence score. See every vendor listing PT-141.
Questions
Is PT-141 from Northline Labs third-party tested?
Yes. 1 certificate for PT-141 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.
How much does PT-141 cost at Northline Labs?
$9.00 per milligram, from 10 mg at $89.99. The peer median across every vendor we price for PT-141 is $4.50 per mg, so this is +100% against the market. Prices are normalised per milligram so vials of different sizes compare fairly.
Is Northline Labs a good place to buy PT-141?
Northline Labs scores 74.4 of 100 on the published rubric and ranks 21 overall, computed from its documentation rather than from opinion. For PT-141 specifically it has 1 certificate on file. Eternal Peptides lists it cheaper at $2.20 per mg.