Independent testing verdict Discrepancy
This product was authentic but did not match its label.
Identity and purity confirmed; measured content was 82.4% of the label claim.
- Identity verified
- Yes
- Measured purity
- 93.7%
- Content accuracy
- 82.4%
- Test recency
- Older result
Mass spectrometry confirmed the labelled compound
Label claimed ≥95%
4.12mg measured against 5mg claimed
Published 19 months ago
Specimen PI-LAB-2025-094 Tested by Cornerstone Analytical 14 samples tested from this company Purity & Testing score 91/100
Full laboratory evidence Findings table, methodology, chain of custody and the original report
Findings
| Metric | Label claim | Measured | Assessment |
|---|---|---|---|
| Purity (HPLC) | ≥ 95% | 93.7% | Within analytical tolerance |
| Identity (MS) | Epitalon | Confirmed | Matches label |
| Content | 5 mg | 4.12 mg | Outside acceptable tolerance |
Methodology & chain of custody
HPLC-UV purity, ESI-MS identity, and Karl Fischer water content.
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
- B9491-25
- Purchased
- Analysed
- Published
- Laboratory
- Cornerstone Analytical
- Test type
- Full panel (purity, identity, content, endotoxin)
Testing notes
Company was notified before publication and given the standard dispute window.
Original laboratory report: PI-LAB-2025-094-report.pdf