Public COA audit
GHK-Cu · GHK-CU 100mg
Audited September 5, 2026
Several fields check out, but we found issues worth reviewing before you rely on this document.
- Legitimacy
- 92
- Confidence
- 88%
- Panels
- 4/7
- Purity (printed)
- 99.92%
Scored high because the document is mostly consistent but carries soft concerns, limited panel coverage (4/7), 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
- GHK100-062026-1
- Identity method
- LC-MS
- Sample date
- 2026-06-19
- Issue date
- 2026-06-22
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.
4 of 7 present · 4 passed · 0 failed · 0 reported · 3 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
Purity
Tested · passed · core
Reported purity percentage for the analyte.
99.92%
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
Tested · passed
Bioburden / microbial limits testing.
No Detectable Microbial DNA
Endotoxin
Tested · passed · core
LAL or chromogenic endotoxin assay.
Pass (both replicates), ≤0.05 EU/mL sensitivity
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
99.92% average purity (Vial 1: 99.91%, Vial 2: 99.93%) via HPLC-UV is excellent and typical for research-grade peptides.
Identity confirmed by LC-MS
Mass spectrometry confirmation provided with chromatogram and mass spectrum showing expected GHK-Cu peaks.
Endotoxin testing present
LAL assay per USP <85> with two replicates both passing at ≤0.05 EU/mL sensitivity.
Microbial testing present
PCR-based microbial analysis shows no detectable microbial DNA.
Lot number clearly stated
Lot GHK100-062026-1 with accession number 2606190037 and search code provided.
Dates are reasonable
Received 2026-06-19, reported 2026-06-22 (3-day turnaround). Both dates are on or before today (2026-09-05).
Lab verification limited
Freedom Diagnostics Testing website and email provided, but no independent accreditation logos (ISO, A2LA, etc.) visible. QR code present but not verifiable from image alone.
Heavy metals and residual solvents not tested
No heavy metals or residual solvent/water content panels present. This is common for some vendors but limits comprehensive quality assessment.
Professional presentation
Document includes chromatogram, mass spectrum, detailed methods, dual-vial testing, and appropriate research-use-only disclaimers.
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.