Public COA audit
TB-500 · TB-4
Audited September 5, 2026
Several fields check out, but we found issues worth reviewing before you rely on this document.
- Legitimacy
- 72
- Confidence
- 85%
- 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
- 2025-03-26
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 is excellent and within normal range for research-grade peptides. HPLC chromatogram shows single dominant peak consistent with high purity.
Identity confirmed
Compound identified as TB-500 (TB-4) with CAS 77591-33-4, molecular formula C212H350N56O78S, molecular weight 4963.49 g/mol. Mass spectrometry data provided showing expected molecular ion peaks.
Batch/Lot number missing
The Batch/Lot # field is present in the document template but left blank. This is unusual for a commercial COA and makes traceability difficult.
Dates are reasonable
Sample received 2025-03-20, analysis conducted 2025-03-26. Six-day turnaround is reasonable for LC-MS analysis.
Lab verification needed
BioRegen presents as an independent testing lab. Verification URL provided (bioregen.com/verify) with QR code and security key BIOLABS2010. Lab contact information and analyst signature (Dr. Roberto Marin) present. Independent verification recommended.
Limited testing scope
This COA only covers identity and purity testing. No heavy metals, microbial, endotoxin, sterility, or residual solvent/water testing included. This appears to be a purity/identity-focused report only.
Professional presentation
Document is well-formatted with clear branding, proper analytical data (HPLC chromatogram, mass spectra), PubChem reference links, and security features (QR code, security key).
Timing & next steps
Practical follow-ups based on document age and gaps.
coa age
This COA was issued over a year ago (528 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.