Public COA audit
TB-500 (TB-4) · Thymosin Beta-4
Audited September 5, 2026
Several fields check out, but we found issues worth reviewing before you rely on this document.
- Legitimacy
- 72
- Confidence
- 83%
- Panels
- 2/7
- Purity (printed)
- 99.98%
Scored moderately because the document is mostly consistent but carries soft concerns, limited panel coverage (2/7), 3 soft concerns, and notable note: "High purity result". To improve: include identity, purity, and endotoxin at minimum.
Document details
Fields extracted from the certificate — not order or payment data.
- Identity method
- LC-MS with UV detection
- Sample date
- 2025-03-20
- Issue date
- 2025-03-27
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).
TB-500 (TB-4)
Purity
Tested · passed · core
Reported purity percentage for the analyte.
99.98%
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 purity result
99.98% purity by LC-MS is excellent and within normal range for research-grade peptides
Identity confirmed
LC-MS with UV detection confirms TB-500 (TB-4) identity with PubChem CID reference 45382195
Missing batch/lot number
The Batch/Lot # field is present in the document layout but appears blank, making traceability difficult
Dates are reasonable
Sample received 03/20/25, analysis conducted 03/27/25 - appropriate turnaround time and both dates are before current date (2026-09-05)
Lab verification unclear
BioRegen presents as an independent testing lab with verification URL (bioregen.com/verify) and QR code, but independent verification of lab credentials was not performed
Limited testing scope
This COA only covers identity and purity testing. No heavy metals, microbial, endotoxin, sterility, or residual solvent testing is included in this report
Professional presentation
Document includes chromatograms (HPLC and MS spectra), proper header/footer, analyst signature, and security key for verification
Timing & next steps
Practical follow-ups based on document age and gaps.
coa age
This COA was issued over a year ago (527 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.