Public COA audit
TB-500 · Thymosin beta4
Audited July 28, 2026
Several fields check out, but we found issues worth reviewing before you rely on this document.
- Legitimacy
- 88
- Confidence
- 92%
- Panels
- 2/7
- Purity (printed)
- 99%
Document details
Fields extracted from the certificate — not order or payment data.
- Batch / lot
- SW-A014-05
- Identity method
- Mass Spectrometry and UV
- Issue date
- 2022-12-23
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).
Molecular weight confirmed, Expected mass: 5017.51 g, Measured mass: 5017.60 g
Purity
Tested · passed · core
Reported purity percentage for the analyte.
99.0%
Heavy metals
Not on this COA
Lead, arsenic, cadmium, mercury, or similar limits.
No evidence for this panel. That lowers thoroughness — whether it matters depends on what you care about.
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
Not on this COA · core
LAL or chromogenic endotoxin assay.
No evidence for this panel. That lowers thoroughness — whether it matters depends on what you care about.
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 purity confirmed
99.0% purity by HPLC-UV with clear chromatogram showing main peak at 12.55 min (99.0% area) and minor impurity at 20.16 min (1.0% area)
Mass spectrometry confirmation
Expected mass 5017.51 g vs measured 5017.60 g - excellent agreement within 0.02% tolerance
Clear lot identification
Lot number SW-A014-05 clearly stated
Analysis and signature dates present
Analysis date 2022-12-22, signed 2022-12-23 by Ken Pendarvis, ChE
Lab information complete
MZ Biolabs, Tucson AZ with contact information and analyst signature
Limited testing scope
Only identity and purity panels present. No heavy metals, microbial, endotoxin, sterility, or residual solvent testing reported
Professional presentation
Clean layout with chromatogram, peak list, PubChem reference, and watermark. Includes note about injectable peptides containing salts/sugars
Timing & next steps
Practical follow-ups based on document age and gaps.
coa age
This COA was issued over a year ago (1313 days) — consider whether a retest is warranted for this batch.
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.