Public COA audit
GHK-Cu
Audited September 5, 2026
Several fields check out, but we found issues worth reviewing before you rely on this document.
- Legitimacy
- 92
- Confidence
- 93%
- Panels
- 5/7
- Purity (printed)
- 99.29%
Scored high because the document is mostly consistent but carries soft concerns, broad panel coverage (5/7), and 2 soft concerns.
Document details
Fields extracted from the certificate — not order or payment data.
- Batch / lot
- CR-GHK-100MG-2607-Purple
- Identity method
- HPLC-RTM
- Sample date
- 2026-07-19
- Issue date
- 2026-07-31
Original certificate
Embedded copy of the stored COA PDF or image. Download it for your records — PeptIQ’s audit is separate from the lab document itself.
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 · 4 passed · 0 failed · 1 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.
99.29%
Heavy metals
Tested · passed
Lead, arsenic, cadmium, mercury, or similar limits.
As: 0.323 ppm, Cd: 0.124 ppm, Pb: 0.618 ppm, Hg: 0.289 ppm, Cr: 6.52 ppm
Microbial
Not on this certificate file
Bioburden / microbial limits testing.
No evidence on this file. Vendors sometimes publish separate purity and endotoxin reports for the same lot — check the brand page before treating this as “never tested.”
Endotoxin
Tested · result on file · core
LAL or chromogenic endotoxin assay.
0.094 EU/mL
Sterility
Tested · passed
Sterility testing where applicable.
No Growth
Residual solvent / water
Not on this certificate file
Residual solvents or water content limits.
No evidence on this file. Vendors sometimes publish separate purity and endotoxin reports for the same lot — check the brand page before treating this as “never tested.”
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 on this file
Not on this certificate file. Lowers file thoroughness; a sibling endotoxin/purity report for the same lot may still exist. PeptIQ’s score still factors coverage.
Findings
Evidence-linked observations from this audit.
High purity with conformity testing
99.29% purity confirmed across three independent samples (mean 99.24%, std dev 0.0638%), demonstrating excellent batch consistency
Identity confirmed by HPLC-RTM
GHK-Cu identity confirmed by chromatographic retention time comparison with reference standard
Clear batch identification
Lot number CR-GHK-100MG-2607-Purple clearly stated with labeled content of 100mg
Appropriate timeline
Sample received 2026-07-19, analyzed and issued 2026-07-31 (12-day turnaround)
ISO/IEC 17025 accredited laboratory
ILS Laboratories claims ISO/IEC 17025 accreditation with complete contact information and verification system
Comprehensive testing panel
Full QC panel includes purity/identity (HPLC), heavy metals (ICP-MS), sterility (PCR), and endotoxin (USP <85>)
Endotoxin reported without pass/fail
Endotoxin result 0.094 EU/mL is reported as quantitative only with no defined acceptance threshold, though noted as below commonly referenced thresholds
Missing microbial and residual solvent panels
No microbial contamination testing (e.g., total aerobic count, yeast/mold) or residual solvent/water content analysis present
Professional presentation
Well-formatted two-page report with chromatogram, conformity data table, QR code verification, and detailed methodology notes
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.