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)
- 99.86%
Scored high because the document is mostly consistent but carries soft concerns, limited panel coverage (3/7), and 2 soft concerns. To improve: include identity, purity, and endotoxin at minimum.
Document details
Fields extracted from the certificate — not order or payment data.
- Batch / lot
- CR-GHK100-0212-1
- Identity method
- HPLC with UV Detection Coupled with Mass Spectrometry
- Sample date
- 2026-02-16
- Issue date
- 2026-02-17
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 by mass spectrometry with [M+2H]2+ 171.05 and [M+H]+ 341.05
Purity
Tested · passed · core
Reported purity percentage for the analyte.
99.86% average (Vial 1: 99.84%, Vial 2: 99.90%, Vial 3: 99.85%)
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 across three vials
Average purity 99.86% with consistent results across all three vials (99.84%, 99.90%, 99.85%). This is normal for research-grade peptides.
Mass spectrometry confirmation provided
Mass spec data shows expected molecular ion peaks for GHK-Cu: [M+2H]2+ at 171.05 and [M+H]+ at 341.05, with HPLC chromatogram showing single major peak.
Endotoxin testing completed
Two replicates both passed with results ≤ 0.05 EU/mL, meeting typical research-grade thresholds.
Batch information complete
Lot number CR-GHK100-0212-1 clearly stated with net peptide content measured for three vials.
Dates are current and logical
Received 02/16/2026, reported 02/17/2026 - one-day turnaround is reasonable for routine testing.
Lab identification present
Freedom Diagnostics with verification URL and contact email provided. Signed by Stephen Schmidt, Principal Chemist.
Limited testing scope
Heavy metals, microbial contamination, sterility, and residual solvents/water content not tested. This is common for basic research-grade COAs but limits comprehensive quality assessment.
Minor presentation inconsistencies
Some formatting appears basic (e.g., 'TEST TEST TEST' placeholder text visible at top), though core data is clearly presented.
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.