Vendor and compound
GHK-Cu from Good Science Bio
Good Science Bio lists GHK-Cu at $0.400 per mg, 33% under the $0.595 peer median. No third-party certificate for GHK-Cu from Good Science Bio has been located, so nothing here establishes what is in the vial. The cheapest listed price for GHK-Cu anywhere in the index is $0.140 per mg at ZC Labs.
All GHK-Cu vendors · Good Science Bio profile · scores 75.8 of 100, rank 20 · 0 certificates for this compound · verified 3 Aug 2026
What it costs
| Vial | Listed price | Per mg | vs peer median | Listing |
|---|---|---|---|---|
| 100 mg | $40 | $0.400 | -33% | 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 Good Science Bio has been located.
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 Good Science Bio third-party tested?
Not so far as this index can establish. No third-party certificate for GHK-Cu from Good Science Bio has been located. 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 Good Science Bio?
$0.400 per milligram, from 100 mg at $40. The peer median across every vendor we price for GHK-Cu is $0.595 per mg, so this is -33% against the market. Prices are normalised per milligram so vials of different sizes compare fairly.
Is Good Science Bio a good place to buy GHK-Cu?
Good Science Bio scores 75.8 of 100 on the published rubric and ranks 20 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.