ILS Laboratories
8222 Vickers St, Suite 106, San Diego, CA 92111
(619) 329-3999 · ils-lab.com
Certificate of Analysis
PASSGHK-Cu — 50mg
Independently tested for: Peerless Peptides
- COA #
- COA-2026-412993
- Method
- Full QC Panel
- Lot Number
- 03-2606
- Analysis Date
- 04/16/2026
- Concentration
- 50mg
- Appearance
- good
- Received
- 03/20/2026
- Volume
- 3mL
Identity
GHK-Cu
Purity
99.56%
Full QC Panel
| Analyte | Specification | Result | Unit | Status |
|---|---|---|---|---|
| Purity (HPLC) | ≥ 95.0%% | 99.56% | % | PASS |
| Net Peptide Content | Report Only | 52.27 | mg | N/A |
| Identity | GHK-CU | Confirmed | ppm | PASS |
| Endotoxin (USP <85>) | < 0.05 EU/mL | ≤ 0.05 EU/mL | EU/mL | PASS |
| Sterility (PCR) | No Growth | No Growth | — | PASS |
Date Tested: 04/16/2026· HPLC at UV 214 nm.
HPLC Chromatogram
Heavy Metals Analysis (ICP-MS)
| Test | Specification | Result | Status |
|---|---|---|---|
| Arsenic (As) | ≤ 1.5 | Not Detected | PASS |
| Cadmium (Cd) | ≤ 0.5 | Not Detected | PASS |
| Chromium (Cr) | ≤ 10.0 | Not Detected | PASS |
| Mercury (Hg) | ≤ 1.5 | Not Detected | PASS |
| Lead (Pb) | ≤ 1.0 | Not Detected | PASS |
Elemental impurities analyzed by Inductively Coupled Plasma Mass Spectrometry (ICP-MS) per USP <233> methodology.
Notes & Methodology
- The sample was confirmed to be GHK-Cu by HPLC. Identification by 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 and do not represent evaluation against any specific pharmacopoeial monograph or product specification.
- Endotoxin tested per USP <85> kinetic chromogenic method. Acceptance criteria per client specification.
- Sterility testing performed by PCR (Polymerase Chain Reaction) method.
- Peptide purity determined by RP-HPLC area normalization at 214 nm. Value represents the percentage of the target peptide relative to all peptide-related peaks. Non-peptide process-related impurities, if detected, are excluded from the calculation.
- Accreditation Scope: ILS Laboratories maintains ISO/IEC 17025 accreditation for activities listed in its published PJLA scope. Peptide testing reported on this certificate is performed for Research Use Only.
- This certificate reports analytical results for the sample(s) submitted to ILS Laboratories for testing. All sample identifications, product names, brand names, lot/batch numbers, and labeled content are provided by the submitting party and have not been independently verified. Results reflect only the analytical testing of the specific sample(s) provided and do not constitute an evaluation or endorsement of the manufacturer's processes, quality systems, or overall production. ILS Laboratories makes no representations regarding the intended use, safety, efficacy, regulatory status, or intellectual property ownership of any materials tested.
Reproduced from the certificate issued by ILS Laboratories. The full signed document is linked below.
Dr. Greg Kalyuzhny
Lab Director
ILS Laboratories
ISO/IEC 17025 accredited laboratory (PJLA), using validated analytical methods
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