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
- 88%
- Panels
- 2/7
- Purity (printed)
- 99.7%
Scored moderately because the document is mostly consistent but carries soft concerns, limited panel coverage (2/7), 3 soft concerns, and notable note: "High HPLC purity". To improve: include identity, purity, and endotoxin at minimum.
Document details
Fields extracted from the certificate — not order or payment data.
- Batch / lot
- WL-CU100-P00519
- Identity method
- FTIR (USP <197A>) and HPLC (USP <621>)
- Sample date
- 2026-06-08
- Issue date
- 2026-06-12
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 · 2 passed · 0 failed · 0 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 · passed · core
Compound identity confirmed (e.g. HPLC, mass spec).
FTIR sample spectrum confirms the presence of GHK-Cu with addition of excipient(s)/fillers
Purity
Tested · passed · core
Reported purity percentage for the analyte.
99.7%
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.
High HPLC purity
99.7% purity is excellent and within normal range for research-grade peptides
Identity confirmed
FTIR and HPLC methods confirm GHK-Cu identity with appropriate USP references
Potency below specification
HPLC potency assay shows 76.3 mg (76.3%) against specification of 90-110% of 100 mg labeled content. This is a failing result for potency despite high purity.
Peptide-to-excipient ratio outside recommendation
Ratio of 1:0.7 is below the recommended 1:2 to 1:10 range, indicating less excipient than typical formulations
Limited testing scope
Testing purpose explicitly states this does not provide information on particulate matter, microbial contamination, or endotoxins. This is a purity/identity-scoped report only.
Batch information complete
Lot number WL-CU100-P00519, BT Sample ID 005000040403791, manufacturer Lumira clearly documented
Lab information present
BTLabs with full contact information, West Palm Beach FL address, phone, email, website provided
Professional presentation
Report includes QR code, signatures from two scientists (Andrea Castro AS, Verna Zheng AS), FTIR spectrum, HPLC chromatogram, and detailed methodology references
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.