Public COA audit
TB-500 · Thymosin β4
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
- 4/7
- Purity (printed)
- 99.91%
Scored high because the document is mostly consistent but carries soft concerns, limited panel coverage (4/7), and 1 soft concern. To improve: include identity, purity, and endotoxin at minimum.
Document details
Fields extracted from the certificate — not order or payment data.
- Batch / lot
- 7wdwhn8
- Identity method
- HPLC-UV-MS
- Sample date
- 2025-11-26
- Issue date
- 2025-12-06
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.
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.
99.91%
Heavy metals
Tested · result on file
Lead, arsenic, cadmium, mercury, or similar limits.
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.
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 chromatographic purity
99.91% purity by HPLC-UV/MS is excellent and typical for research-grade peptides
Identity confirmed
Mass spectrum matches authentic Thymosin β4 standard with characteristic m/z peaks (711, 622, 829, 994)
Potency within specification
10.9 mg measured vs 10 mg label claim = 109.1% of label, within typical acceptance range
Batch/lot number present
Lot 7wdwhn8 clearly identified
Dates consistent
Sample received 2025-11-26, tested 2025-11-28, report issued 2025-12-06 - all dates are logical and sequential
Established testing laboratory
Krause Analytical LLC is a known peptide testing lab in Austin, TX with verification URL provided
Multiple testing panels documented
Methods summary on page 3 describes purity/potency/identity (USP/NF 621), endotoxins (USP/NF 85), and metals (USP/NF 233) testing protocols
Endotoxin and metals results not shown
Methods for endotoxin (LAL) and heavy metals (ICP-MS) are described on page 3, but numerical results are not presented on this certificate - may be on separate report or pending
Professional presentation
Document includes chromatogram, mass spectrum comparison, signature of Laboratory Director Mark C. Krause, and comprehensive methods summary
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.