Batch # sr-ghkcu-260309-001GHK-Cu 100mg
100mg Rejected, not sold
Rejected, not sold. Independent lab report COA-2026-8J5KF1 (analyzed 05/11/2026): cadmium 1.312 ppm against the report's 0.5 ppm limit; 99.65% HPLC purity, identity confirmed, sterility screen no growth, endotoxin NMT 0.05 EU/mL, fentanyl not tested.
Sample was submitted to the lab as 10mg by mistake, so the net content reading is not meaningful for this 100mg lot.
Independent lab report
Commissioned by Source Research from an independent lab, separate from the supplier. Values below are copied from the report as printed.
| Analyte | Specification | Result | Status |
|---|---|---|---|
| Purity (HPLC) | >= 95.0% | 99.65% | PASS |
| Net Peptide Content | Report Only | 10.36 mg | N/A |
| Identity (ID) | GHK-CU | Confirmed | PASS |
| Test | Specification | Result | Status |
|---|---|---|---|
| Arsenic (As) | NMT 1.5 ppm | Not Detected | PASS |
| Cadmium (Cd) | NMT 0.5 ppm | 1.312 ppm | FAIL |
| Chromium (Cr) | NMT 10 ppm | Not Detected | PASS |
| Mercury (Hg) | NMT 1.5 ppm | Not Detected | PASS |
| Lead (Pb) | NMT 1 ppm | Not Detected | PASS |
| Test | Specification | Result | Status |
|---|---|---|---|
| Sterility (PCR) | No Growth | No Growth | PASS |
| Test | Specification | Result | Status |
|---|---|---|---|
| Endotoxin (USP <85>) | < 0.25 EU/mL | NMT 0.05 EU/mL | PASS |
Fentanyl: not tested. This report does not include a fentanyl screen.
Methods, as stated in the report
- Identity confirmed by HPLC: chromatographic retention time comparison with a reference standard.
- Elemental impurities analyzed by ICP-MS per USP <233> methodology. Acceptance criteria are internal laboratory quality screening limits for research-use materials.
Report links: Verify page · PDF
Supplier COA
No supplier COA is published for this lot.
All GHK-Cu 100mg lots · All testing records
For laboratory research use only. Results relate only to the sample tested.