Vendor and compound
GHK-Cu from ZC Labs
ZC Labs lists GHK-Cu at $0.140 per mg, 77% under the $0.600 peer median. 2 third-party certificates for this compound from this vendor are on file, assayed by Freedom Diagnostics Testing, averaging 99.75% purity. That is the cheapest listed price for GHK-Cu in the index.
All GHK-Cu vendors · ZC Labs profile · scores 87.2 of 100, rank 3 · 2 certificates for this compound · verified 5 Nov 2026
What it costs
| Vial | Listed price | Per mg | vs peer median | Listing |
|---|---|---|---|---|
| 100 mg | $14.5 | $0.145 | -76% | GHK-Cu 100mg |
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. Codepepindex· 10% off applies at checkout.
What the laboratory found
| Lot | Assayed | Purity | Label → assayed | Laboratory | Record |
|---|---|---|---|---|---|
| ZCLa2607301120 | 4 Aug 2026 | 99.66% | 100 mg → 103.77 mg | Freedom Diagnostics Testing | Open |
| ZCLa2606080089 | 9 Jun 2026 | 99.83% | 100 mg → 98.66 mg | Freedom Diagnostics Testing | Open |
Freedom Diagnostics Testing 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 GHK-Cu
| Vendor | Score | Per mg | Certificates for this compound |
|---|---|---|---|
| Origin Labs | 89.1 | — | 2 |
| Next Gen Peptides | 87.7 | $0.400 | 7 |
| Amino Club | 86.1 | $0.580 | 3 |
| PeptidePlugs | 82.6 | $0.400 | 2 |
| Modern Aminos | 79.7 | $0.640 | 2 |
| Bench Grade Peptides | 79.4 | $0.380 | 4 |
| Hydro Research Peptides | 78.7 | — | 1 |
| Stealth Research Labs | 78.1 | $0.800 | 1 |
Ordered by overall evidence score. See every vendor listing GHK-Cu.
Questions
Is GHK-Cu from ZC Labs third-party tested?
Yes. 2 certificates for GHK-Cu from ZC Labs are on file, signed by Freedom Diagnostics Testing. Each names a lot, prints the assayed mass against the labelled mass, and links to the document it was read from. Freedom Diagnostics Testing also publishes a lookup, so the report can be confirmed at the laboratory rather than taken from the vendor.
How much does GHK-Cu cost at ZC Labs?
$0.140 per milligram, from 100 mg at $14.5. The peer median across every vendor we price for GHK-Cu is $0.600 per mg, so this is -77% against the market. Prices are normalised per milligram so vials of different sizes compare fairly.
Is ZC Labs a good place to buy GHK-Cu?
ZC Labs scores 87.2 of 100 on the published rubric and ranks 3 overall, computed from its documentation rather than from opinion. For GHK-Cu specifically it has 2 certificates on file.