Independent testing verdict Pass
This product matched its label.
Identity confirmed and measured purity of 98.4% met the stated ≥99% claim. Content measured 100.7% of label.
- Identity verified
- Yes
- Measured purity
- 98.4%
- Content accuracy
- 100.7%
- Test recency
- Current cycle
Mass spectrometry confirmed the labelled compound
Label claimed ≥99%
10.07mg measured against 10mg claimed
Published 4 months ago
Specimen PI-LAB-2026-020 Tested by Cornerstone Analytical 16 samples tested from this company Purity & Testing score 98/100
Full laboratory evidence Findings table, methodology, chain of custody and the original report
Findings
| Metric | Label claim | Measured | Assessment |
|---|---|---|---|
| Purity (HPLC) | ≥ 99% | 98.4% | Within analytical tolerance |
| Identity (MS) | Matrixyl | Confirmed | Matches label |
| Content | 10 mg | 10.07 mg | Within 5% of label |
Methodology & chain of custody
LC-MS/MS identity confirmation with quantitative amino acid analysis.
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.
- Lot / batch
- R4541-26
- Purchased
- Analysed
- Published
- Laboratory
- Cornerstone Analytical
- Test type
- Content verification
Original laboratory report: PI-LAB-2026-020-report.pdf