Discrepancy
Purity (HPLC) 94.2% Purity below the company’s 98% claim.
Findings
| Metric | Label claim | Measured | Assessment |
|---|---|---|---|
| Purity (HPLC) | ≥ 98% | 94.2% | Fails claim |
| Content (mass spec) | 10.0 mg | 9.1 mg | -9.0% vs. label |
Methodology
RP-HPLC purity; MALDI-TOF identity.
The sample was purchased anonymously through standard retail checkout and shipped to an unaffiliated address, then logged, photographed, and forwarded under chain-of-custody documentation to Cornerstone Analytical. See our full testing methodology.
Testing notes
Company reformulated supplier relationships after this result; 2026 samples improved.
Original laboratory report: PI-LAB-2025-0002-report.pdf
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