Verified
Purity (HPLC) 97.1% Marginally below purity claim; content within 4% of label.
Findings
| Metric | Label claim | Measured | Assessment |
|---|---|---|---|
| Purity (HPLC) | ≥ 98% | 97.1% | Slightly below claim |
| Content (mass spec) | 5.0 mg | 4.8 mg | Within 5% of 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
Improvement over this company’s 2025 results.
Original laboratory report: PI-LAB-2026-0009-report.pdf
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