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)
- 99.62%
Document details
Fields extracted from the certificate — not order or payment data.
- Batch / lot
- CR-GHKCU-100-2606-1
- Identity method
- HPLC-RTM (chromatographic retention time comparison with reference standard)
- Sample date
- 2026-06-04
- Issue date
- 2026-06-09
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).
GHK Cu Confirmed
Purity
Tested · passed · core
Reported purity percentage for the analyte.
99.62%
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.
Dates are consistent and logical
Received 2026-06-04, analyzed 2026-06-09, issued 2026-06-09
ISO/IEC 17025 accredited laboratory
ILS Laboratories, San Diego, with accreditation badges and verification system
Verification system provided
QR code, access code W287DNAF, and URL portal.ils-lab.com/verify/ZT8O2OnwPiRnOPjF for authentication
Professional presentation
Well-structured 2-page COA with chromatogram, conformity data, methodology notes, and signature
Microbial testing not performed
No standard microbial panel (TAMC/TYMC) present; only sterility PCR performed
No residual solvent/water content testing
Common for lyophilized peptides but not included in this analysis
High purity confirmed with conformity testing
99.62% purity with conformity testing across 3 samples (mean 99.57%, std dev 0.033%), demonstrating batch consistency
Identity confirmed by HPLC retention time
GHK-Cu confirmed via HPLC-RTM with reference standard comparison
Comprehensive testing panel
Includes purity, identity, heavy metals, endotoxin, sterility, and fentanyl screening
Clear batch identification
Lot CR-GHKCU-100-2606-1, COA-2026-NBKKUT, Accession ACC-2026-3978
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.