Public COA audit
GHK-Cu
Audited July 29, 2026
Several fields check out, but we found issues worth reviewing before you rely on this document.
- Legitimacy
- 72
- Confidence
- 83%
- Panels
- 3/7
- Purity (printed)
- 99.785%
Document details
Fields extracted from the certificate — not order or payment data.
- Batch / lot
- 0001
- Identity method
- HPLC with UV Detection Coupled with Mass Spectrometry (LCMS/MS)
- Sample date
- 2025-11-19
- Issue date
- 2025-11-21
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 by mass spec [M+2H]2+ 171.05, [M+H]+ 341.10
Purity
Tested · passed · core
Reported purity percentage for the analyte.
99.785%
Heavy metals
Not on this COA
Lead, arsenic, cadmium, mercury, or similar limits.
No evidence for this panel. That lowers thoroughness — whether it matters depends on what you care about.
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.
≤ 0.05 EU/mL (both replicates)
Sterility
Not on this COA
Sterility testing where applicable.
No evidence for this panel. That lowers thoroughness — whether it matters depends on what you care about.
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 purity confirmed
99.785% purity by HPLC is within normal range for research-grade peptides
Mass spec confirmation present
LCMS/MS data shows expected molecular ion peaks for GHK-Cu
Endotoxin testing performed
Duplicate endotoxin testing per USP <85> guidelines, both replicates pass at ≤ 0.05 EU/mL
Generic lot number
Lot number '0001' is very generic and may indicate limited batch tracking
Lab verification needed
Freedom Diagnostics is not a widely recognized third-party testing lab; independent verification of lab credentials recommended
Two separate accession numbers
Document contains two COAs (2511190041 for purity/identity, 2511190042 for endotoxin) for same lot 0001, which is unusual but may reflect lab workflow
Limited testing scope
No heavy metals, microbial, sterility, or residual solvent testing reported
Dates are reasonable
Received 2025-11-19, reported 2025-11-21 (2-day turnaround is plausible)
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.