Public COA audit

Tirzepatide

Audited July 29, 2026

Mostly consistent, with concerns

Several fields check out, but we found issues worth reviewing before you rely on this document.

Legitimacy
92
Confidence
93%
Panels
2/7
Purity (printed)
99.7%

Document details

Fields extracted from the certificate — not order or payment data.

Batch / lot
WL-TR10-P00519
Identity method
FTIR (USP <197A>) and HPLC (USP <621>)
Sample date
2026-06-08
Issue date
2026-06-12

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).

    FTIR sample spectrum confirms the presence of Tirzepatide with addition of excipient(s)/fillers

  • Purity

    Tested · passed · core

    Reported purity percentage for the analyte.

    99.7%

  • 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 HPLC purity achieved

    99.7% purity by HPLC (USP <621>) exceeds the ≥98% specification. This is normal for research-grade peptides and not a red flag.

  • Identity confirmed by FTIR and HPLC

    FTIR spectrum confirms Tirzepatide presence with excipients/fillers. HPLC chromatogram shows single dominant peak at 10.662 min retention time.

  • Potency within specification

    10.5 mg measured (105.1% of labeled 10 mg), within the 90-110% specification range.

  • Batch and sample identification present

    Lot number WL-TR10-P00519, BT Sample ID 005000040403812, Report # IF-824-QSA-TR006-BTL2718-11.

  • Testing lab identified with contact information

    BTLabs, 5730 Corporate Way Suite 220, West Palm Beach, FL 33407. Phone: (561) 625-0133. Website: https://btlabtesting.com. Two scientists signed (Andrea Castro, AS and Verna Zheng, AS).

  • Limited testing scope

    COA explicitly states it does not provide information on particulate matter, microbial contamination, or endotoxins. No heavy metals, sterility, or residual solvent testing reported. This is common for basic peptide identity/purity testing but limits comprehensive quality assessment.

  • Professional presentation with supporting data

    Document includes FTIR spectrum, HPLC chromatogram, peptide-to-excipient ratio (1:4.3), visual description, and QR code. Formatting is consistent with professional laboratory reports.

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.