Public COA audit
Glutathione
Audited September 5, 2026
Several fields check out, but we found issues worth reviewing before you rely on this document.
- Legitimacy
- 92
- Confidence
- 93%
- Panels
- 5/7
- Purity (printed)
- 98.71%
Scored high because the document is mostly consistent but carries soft concerns, broad panel coverage (5/7), and 1 soft concern.
Document details
Fields extracted from the certificate — not order or payment data.
- Batch / lot
- CRGLU-1500-2605-2
- Identity method
- HPLC-RTM (retention time match)
- Sample date
- 2026-05-27
- Issue date
- 2026-06-01
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.
5 of 7 present · 4 passed · 0 failed · 1 reported · 2 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).
Confirmed
Purity
Tested · passed · core
Reported purity percentage for the analyte.
98.71%
Heavy metals
Tested · passed
Lead, arsenic, cadmium, mercury, or similar limits.
All Not Detected (As, Cd, Cr, Hg, Pb)
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 · result on file · core
LAL or chromogenic endotoxin assay.
NMT 0.05 EU/mL
Sterility
Tested · passed
Sterility testing where applicable.
No Growth
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
98.71% purity by HPLC with conformity testing across 3 samples (mean 98.45%, std dev 0.22%), demonstrating batch consistency.
Identity confirmed
Glutathione confirmed by HPLC retention time match with reference standard. Fentanyl screen also performed (not detected).
Comprehensive testing panel
Full QC panel includes purity, identity, heavy metals (ICP-MS), sterility (PCR), and endotoxin (USP <85>). Microbial and residual solvent panels not included.
Clear batch identification
Lot number CRGLU-1500-2605-2, COA number COA-2026-RZEUXW, Accession ACC-2026-3361 all clearly stated.
Dates consistent and valid
Sample received 2026-05-27, analyzed 2026-06-01, issued 2026-06-01. All dates are consistent and on or before today (2026-09-05).
ISO/IEC 17025 accredited lab
ILS Laboratories claims ISO/IEC 17025 accreditation. Lab director signature present. Verification URL and QR code provided.
Endotoxin reported without pass/fail
Endotoxin result is NMT 0.05 EU/mL with status 'Reported' rather than pass/fail. Document notes this is below commonly referenced thresholds but no universal pass/fail applies to RUO products.
Professional presentation
Multi-page COA with detailed methodology notes, conformity testing data, chromatogram, and comprehensive test results. Formatting is consistent with professional laboratory standards.
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.