Public COA audit
Tirzepatide
Audited July 29, 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)
- 99.9%
Document details
Fields extracted from the certificate — not order or payment data.
- Batch / lot
- nttjsze
- Identity method
- HPLC-UV-MS
- Sample date
- 2026-05-05
- Issue date
- 2026-05-13
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 · 2 passed · 0 failed · 2 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).
ID Confirmed
Purity
Tested · passed · core
Reported purity percentage for the analyte.
>99.9%
Heavy metals
Tested · result on file
Lead, arsenic, cadmium, mercury, or similar limits.
Microbial
Not on this COA
Bioburden / microbial limits testing.
No evidence for this panel. That lowers thoroughness — whether it matters depends on what you care about.
Endotoxin
Tested · result on file · core
LAL or chromogenic endotoxin assay.
Sterility
Not on this COA
Sterility testing where applicable.
No evidence for this panel. That lowers thoroughness — whether it matters depends on what you care about.
Residual solvent / water
Not on this COA
Residual solvents or water content limits.
No evidence for this panel. That lowers thoroughness — whether it matters depends on what you care about.
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
Not on this certificate. Lowers thoroughness; you decide if that panel matters for your use case. PeptIQ’s score still factors coverage.
Findings
Evidence-linked observations from this audit.
High chromatographic purity
HPLC purity >99.9% is normal for research-grade peptides and supported by clean chromatogram showing single dominant peak
Mass spectral confirmation
Identity confirmed by HPLC-UV-MS with mass spectrum showing expected m/z peaks for Tirzepatide (1613.8, 1606.2, 1214.9)
Batch/lot number present
Batch/Lot nttjsze clearly stated
Dates within normal range
Sample received 2026-05-05, tested 2026-05-09, report issued 2026-05-13 - all dates are sequential and on or before 2026-07-29
Established testing laboratory
Krause Analytical LLC is a known analytical testing laboratory in Austin, TX with verification URL provided
Endotoxin and metals methods described but results not shown
Page 4 describes methods for endotoxin (LAL) and heavy metals (ICP-MS) testing, but no numerical results are presented on page 1
Microbial and sterility testing not included
No microbial or sterility panels present - common for research-grade peptides not intended for human use
Professional formatting with supporting data
Document includes chromatogram (page 2), mass spectrum (page 3), and detailed methods summary (page 4)
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.