GHK-Cu certificates of analysis
Every GHK-Cu lot, with the full results from Freedom Diagnostics. Current lots test at 99.81% purity by HPLC-UV, with identity confirmed by LC-MS on every lot.
Last updated
All lots
Find the lot number on your vial label and open the matching row. Each lot page shows every result, the methods used, the mass confirmation and the laboratory reference numbers.
| Lot | Vial size | Net content | Purity (HPLC-UV) | Identity (LC-MS) | Endotoxin (LAL) | Microbial (PCR) | Reported | COA |
|---|---|---|---|---|---|---|---|---|
| KB10020 | 100 mg | 129.78 mg | 99.81% | Confirmed | Not tested | Not tested | View lot KB10020 |
Testing laboratory: Freedom Diagnostics. Release specification: purity ≥95% by HPLC-UV with identity confirmed by LC-MS. Results apply only to the lot listed. Certificates list the testing client as Klow.bio / Klow Labs LLC, the company that operates GHK-Cu Labs.
GHK-Cu testing records
Every test on every GHK-Cu lot in one table: lot, test, method, result, laboratory and date. The same data is available as a CSV file.
| Lot | Size | Test | Method | Result | Laboratory | Reported |
|---|---|---|---|---|---|---|
| KB10020 | 100 mg | Purity | HPLC-UV (area percent) | 99.81% | Freedom Diagnostics | May 14, 2026 |
| KB10020 | 100 mg | Identity | LC-MS | Confirmed | Freedom Diagnostics | May 14, 2026 |
| KB10020 | 100 mg | Net content | Laboratory quantitation | 129.78 mg | Freedom Diagnostics | May 14, 2026 |
| KB10020 | 100 mg | Appearance | Visual | Blue lyophilized powder | Freedom Diagnostics | May 14, 2026 |
| KB10020 | 100 mg | Bacterial endotoxin | LAL assay, USP <85> | Not tested | Freedom Diagnostics | May 14, 2026 |
| KB10020 | 100 mg | Microbial DNA | PCR | Not tested | Freedom Diagnostics | May 14, 2026 |
Download the testing records (CSV). Values are copied from each laboratory certificate.
Verify a certificate
Check any GHK-Cu certificate directly with the laboratory.
- Find the lot number on your vial. It is printed on the label, for example KB10020.
- Look it up. Enter it at ghkcu.bio/verify, or open the matching lot in the COA archive.
- Check the lab's own record. Scan the Freedom Diagnostics QR code printed on the certificate, then search for klow.bio under the Company tab to view the laboratory record.
- Compare the details. Lot number, the laboratory’s reference numbers, purity and dates should match exactly.
What a certificate of analysis does and doesn't show
- A COA reports the identity, purity and content of the specific sample tested, on its test date. Results apply to that lot only.
- HPLC purity measures the main peak relative to other detected components. It does not identify the peak on its own; the separate identity test (LC-MS) does that.
- Mass confirmation matches molecular weight. It does not by itself confirm amino-acid order.
- Endotoxin and microbial results apply only where those tests appear on the certificate. Lots without them are marked "Not tested".
- A certificate does not establish stability after the test date or suitability for any particular purpose.
Reading these certificates
Guides to every section of a GHK-Cu certificate and the methods behind it.
Buy GHK-Cu
50 mg and 100 mg vials. Current lot KB10020 tested at 99.81% purity with identity confirmed by LC-MS. Current purchasing is available through Klow.bio.