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
- 72
- Confidence
- 83%
- Panels
- 2/7
Scored moderately because the document is mostly consistent but carries soft concerns, limited panel coverage (2/7), 3 soft concerns, and notable note: "No explicit purity percentage stated". To improve: include identity, purity, and endotoxin at minimum.
Document details
Fields extracted from the certificate — not order or payment data.
- Batch / lot
- APR-7332292
- Identity method
- UPLC, Mass Spectrometry (MS)
- Sample date
- 2026-03-27
- Issue date
- 2026-03-27
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.
2 of 7 present · 0 passed · 0 failed · 2 reported · 5 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 · result on file · core
Compound identity confirmed (e.g. HPLC, mass spec).
MS2 ES+ TIC peaks at 1.9827 and 2.4269; MS shows peaks at 217.47, 227.47, 400.99, and others consistent with GHK-Cu
Purity
Tested · result on file · core
Reported purity percentage for the analyte.
ELSD Signal Range: 292 shown, but no explicit purity percentage stated
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
Not on this certificate file · core
LAL or chromogenic endotoxin assay.
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.”
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.
No explicit purity percentage stated
The COA shows UPLC chromatograms with ELSD signal range 292 and multiple peaks, but does not provide a numerical purity percentage or area-under-curve calculation. This is unusual for a complete purity analysis.
Identity confirmation via UPLC-MS
Mass spectrometry data shows peaks consistent with GHK-Cu structure. PubChem CID 71587328 is referenced. MS peaks at 217.47, 227.47, 400.99 and chromatographic retention times are documented.
Purity/identity report file
This certificate file looks like a purity/identity report. Many vendors publish a separate endotoxin report for the same lot — missing endotoxin on this file alone does not prove the lot was never tested.
Lot number clearly stated
Lot Number APR-7332292 is clearly printed at the top of the document.
Dates are current and consistent
Received Date and Analysis Conducted both show 03/27/2026, which is before the current date of 2026-09-05. Same-day turnaround is plausible for UPLC-MS analysis.
Lab verification not independently confirmed
Horizon Analytical is listed with contact email and website horizonanalytical.com. The document states 'Proudly Owned and Operated in the USA' but independent verification of this lab's accreditation or existence was not performed as part of this audit.
Professional presentation
Document has clean layout, branded header, clear chromatograms and mass spectra with labeled axes and peaks. Formatting is consistent with professional analytical lab reports.
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.