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
- 88
- Confidence
- 92%
- Panels
- 3/7
- Purity (printed)
- 99.873%
Scored high because the document is mostly consistent but carries soft concerns, limited panel coverage (3/7), and 1 soft concern. To improve: include identity, purity, and endotoxin at minimum.
Document details
Fields extracted from the certificate — not order or payment data.
- Batch / lot
- GHKCU 50mg 0009
- Identity method
- HPLC with UV Detection Coupled with Mass Spectrometry (LCMS/MS)
- Sample date
- 2025-11-19
- Issue date
- 2025-11-21
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.
3 of 7 present · 3 passed · 0 failed · 0 reported · 4 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 via mass spec [M+2H]2+ 171.05, [M+H]+ 341.15
Purity
Tested · passed · core
Reported purity percentage for the analyte.
99.873%
Heavy metals
Not on this certificate file
Lead, arsenic, cadmium, mercury, or similar 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.”
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 · passed · core
LAL or chromogenic endotoxin assay.
≤ 0.05 EU/mL (both replicates)
Sterility
Not on this certificate file
Sterility testing where applicable.
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.”
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 confirmed
99.873% purity by HPLC is excellent and typical for research-grade peptides. HPLC chromatogram shows clean single peak.
Mass spec confirmation
Identity confirmed via LCMS/MS with expected mass ions [M+2H]2+ at 171.05 and [M+H]+ at 341.15 for GHK-Cu.
Endotoxin testing included
Separate endotoxin report (page 2, accession 2511190044) shows duplicate testing per USP <85>, both replicates ≤ 0.05 EU/mL, passing.
Lot number present
Lot GHKCU 50mg 0009 clearly identified with net peptide content 51.09 mg.
Lab identification
Freedom Diagnostics, USA-based, with verification URL FreedomDiagnosticsTesting.com and contact [email protected]. Signed by Stephen Schmidt, Principal Chemist.
Professional presentation
Document includes chromatogram, mass spectrum, product photo, and appropriate research-use disclaimers. Two-page format with purity/identity on page 1 and endotoxin on page 2.
Limited panel scope
No heavy metals, microbial (beyond endotoxin), sterility, or residual solvent/water testing reported. This is common for basic peptide COAs but limits comprehensive quality assessment.
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.