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
- 72
- Confidence
- 85%
- Panels
- 3/7
- Purity (printed)
- 99.79%
Document details
Fields extracted from the certificate — not order or payment data.
- Batch / lot
- CR-GHKC99-2511-1
- Identity method
- HPLC with UV Detection Coupled with Mass Spectrometry (LCMS/MS)
- Sample date
- 2025-12-15
- Issue date
- 2025-12-16
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).
99.79%
Purity
Tested · passed · core
Reported purity percentage for the analyte.
Vial 1: 99.776%, Vial 2: 99.812%
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.
Replicate 1 & 2: ≤ 0.05 EU/mL
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
HPLC purity of 99.79% with individual vial measurements of 99.776% and 99.812% is consistent with high-quality research peptide standards
Mass spectrometry confirmation
Mass spec data shows expected [M+2H]2+ at 171.00 and [M+H]+ at 341.00, consistent with GHK-Cu molecular weight
Limited testing scope
Only identity, purity, and endotoxin panels present. Missing heavy metals, microbial, sterility, and residual solvent/water testing
Lab verification unclear
Freedom Diagnostics website and contact provided, but independent verification of lab accreditation/credentials not possible from document alone
Professional presentation with minor inconsistencies
Document appears professionally formatted with chromatogram and mass spec data, though some layout elements (repeated 'TEST' fields at top) suggest template usage
Dates within normal range
Received 12/15/2025, reported 12/16/2025 - one-day turnaround is reasonable for basic testing
Batch information complete
Lot number CR-GHKC99-2511-1 provided with client name (Crush Research) and search code for verification
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.