Public COA audit
GHK-Cu
Audited July 28, 2026
Several fields check out, but we found issues worth reviewing before you rely on this document.
- Legitimacy
- 92
- Confidence
- 88%
- Panels
- 5/7
- Purity (printed)
- 99.91%
Document details
Fields extracted from the certificate — not order or payment data.
- Batch / lot
- CRGHK-100-2604-1
- Identity method
- HPLC retention time comparison with reference standard
- Sample date
- 2026-04-17
- Issue date
- 2026-04-22
7-panel checklist
Had data + good, had data + bad, reported without pass/fail, or missing. Missing lowers thoroughness — you decide whether that panel matters; PeptIQ’s score still factors coverage.
5 of 7 present · 5 passed · 0 failed · 0 reported · 2 missing
Missing is a thoroughness gap — not automatically bad. PeptIQ’s legitimacy score still weighs panel coverage; you can down-weight panels that don’t matter for your use case.
Identity
Tested · passed · core
Compound identity confirmed (e.g. HPLC, mass spec).
Confirmed
Purity
Tested · passed · core
Reported purity percentage for the analyte.
99.91%
Heavy metals
Tested · passed
Lead, arsenic, cadmium, mercury, or similar limits.
All Not Detected (As, Cd, Cr, Hg, Pb)
Microbial
Not on this COA
Bioburden / microbial limits testing.
No evidence for this panel. That lowers thoroughness — whether it matters depends on what you care about.
Endotoxin
Tested · passed · core
LAL or chromogenic endotoxin assay.
NMT 0.05 EU/mL
Sterility
Tested · passed
Sterility testing where applicable.
No Growth
Residual solvent / water
Not on this COA
Residual solvents or water content limits.
No evidence for this panel. That lowers thoroughness — whether it matters depends on what you care about.
How to read this
Had data · good
Panel present with a pass (or clear acceptance).
Had data · bad
Panel present with a fail — a concrete quality signal.
Had data · unclear
Value reported without an explicit pass/fail mark.
Missing
Not on this certificate. Lowers thoroughness; you decide if that panel matters for your use case. PeptIQ’s score still factors coverage.
Findings
Evidence-linked observations from this audit.
High HPLC purity
99.91% purity by HPLC is excellent and typical for research-grade peptides. Conformity testing across 3 samples shows tight consistency (mean 99.92%, std dev 0.0094%).
Identity confirmed
GHK-Cu identity confirmed by HPLC retention time comparison with reference standard. Chromatogram provided.
Comprehensive testing
Full QC panel includes purity, identity, sterility (PCR), endotoxin (USP <85>), and heavy metals (ICP-MS per USP <233>). Conformity testing on 3 samples demonstrates batch consistency.
Batch information complete
Lot number CRGHK-100-2604-1, COA number COA-2026-Q75MDB, and accession number ACC-2026-0951 all clearly stated.
Dates logical and current
Received 04/17/2026, analyzed and issued 04/22/2026. All dates are on or before today (2026-07-28) and follow logical sequence.
Lab credentials stated
ILS Laboratories claims ISO/IEC 17025 accreditation. Address, phone, and website provided. Verification URL and QR code present.
Professional presentation
Two-page COA with consistent branding, clear tables, HPLC chromatogram, lab director signature, and verification access code (LUMCEX5P).
Microbial and residual solvent panels absent
No microbial contamination panel (e.g., total aerobic count, yeast/mold) or residual solvent/water content testing. Sterility (PCR) is present but does not replace full microbial testing. This is not uncommon for research peptide COAs but limits completeness.
PeptIQ COA reports analyze document content and publicly verifiable lab signals. They are educational and not a guarantee of product quality, legality, or safety. Always consult a qualified professional before making health decisions. We never publish purchase prices, shipping details, or uploader identity.