Vendor and compound
Retatrutide from Northline Labs
Northline Labs lists Retatrutide at $8.00 per mg, 8% over the $7.40 peer median. 1 third-party certificate for this compound from this vendor is on file, assayed by ILS Laboratories, averaging 99.43% purity. The cheapest listed price for Retatrutide anywhere in the index is $2.90 per mg at ZC Labs.
All Retatrutide 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 | $79.99 | $8.00 | +8% | Reta GLP-3 – 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-8620700 | 12 May 2026 | 99.43% | 10 mg → 9.88 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 Retatrutide
| Vendor | Score | Per mg | Certificates for this compound |
|---|---|---|---|
| Origin Labs | 89.1 | — | 5 |
| Next Gen Peptides | 87.7 | $4.00 | 16 |
| ZC Labs | 87.2 | $2.90 | 5 |
| Amino Club | 86.1 | $7.00 | 3 |
| Bench Grade Peptides | 79.4 | $3.90 | 4 |
| Hydro Research Peptides | 78.7 | — | 1 |
| Stealth Research Labs | 78.1 | $7.00 | 1 |
| One Aminos | 78 | $7.00 | 2 |
Ordered by overall evidence score. See every vendor listing Retatrutide.
Questions
Is Retatrutide from Northline Labs third-party tested?
Yes. 1 certificate for Retatrutide 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 Retatrutide cost at Northline Labs?
$8.00 per milligram, from 10 mg at $79.99. The peer median across every vendor we price for Retatrutide is $7.40 per mg, so this is +8% against the market. Prices are normalised per milligram so vials of different sizes compare fairly.
Is Northline Labs a good place to buy Retatrutide?
Northline Labs scores 68 of 100 on the published rubric and ranks 21 overall, computed from its documentation rather than from opinion. For Retatrutide specifically it has 1 certificate on file. ZC Labs lists it cheaper at $2.90 per mg.