Vendor and compound
GHK-Cu from Improved Peptides
Improved Peptides lists GHK-Cu at $0.900 per mg, 51% over the $0.595 peer median. 1 certificate record for this compound name no laboratory we could identify, so it is not counted as third-party evidence. The cheapest listed price for GHK-Cu anywhere in the index is $0.140 per mg at ZC Labs.
All GHK-Cu vendors · Improved Peptides profile · scores 62.7 of 100, rank 31 · 0 certificates for this compound · verified 3 Aug 2026
What it costs
| Vial | Listed price | Per mg | vs peer median | Listing |
|---|---|---|---|---|
| 50 mg | $45 | $0.900 | +51% | GHK-Cu |
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
No third-party certificate for GHK-Cu from Improved Peptides has been located. 1 record exists for this compound whose laboratory field names nothing checkable — a placeholder, a signature block or the vendor itself — so it is not counted as third-party evidence.
That is a statement about the public record, not an accusation. The vendor may test and not publish, or publish somewhere we have not read. What it means for a buyer is that the price above is the only thing established here, and price says nothing about what is in the vial.
Vendors whose certificates you can check yourself lists the ones where that gap is closed.
Other vendors selling GHK-Cu
| Vendor | Score | Per mg | Certificates for this compound |
|---|---|---|---|
| Next Gen Peptides | 93.8 | $0.400 | 3 |
| Ascend Science | 90.1 | $0.450 | 2 |
| Amino Club | 88.3 | $0.580 | 2 |
| Modern Aminos | 88.1 | $0.640 | 1 |
| Origin Labs | 87.7 | — | 2 |
| Bench Grade Peptides | 86.8 | $0.380 | 4 |
| Polaris Peptides | 86.6 | $0.700 | 0 |
| PeptidePlugs | 86.3 | $0.400 | 7 |
Ordered by overall evidence score. See every vendor listing GHK-Cu.
Questions
Is GHK-Cu from Improved Peptides third-party tested?
Not so far as this index can establish. No third-party certificate for GHK-Cu from Improved Peptides has been located, though 1 record exists that name no identifiable laboratory. The vendor may test and not publish; what can be said is that nothing public establishes the contents of a vial.
How much does GHK-Cu cost at Improved Peptides?
$0.900 per milligram, from 50 mg at $45. The peer median across every vendor we price for GHK-Cu is $0.595 per mg, so this is +51% against the market. Prices are normalised per milligram so vials of different sizes compare fairly.
Is Improved Peptides a good place to buy GHK-Cu?
Improved Peptides scores 62.7 of 100 on the published rubric and ranks 31 overall, computed from its documentation rather than from opinion. For GHK-Cu specifically no certificate is on file, which is the gap to weigh. ZC Labs lists it cheaper at $0.140 per mg.