Independent testing verdict Discrepancy
This product was authentic but did not match its label.
Identity confirmed, but measured purity of 97.3% fell short of the stated ≥99% claim.
- Identity verified
- Yes
- Measured purity
- 97.3%
- Content accuracy
- 98.8%
- Test recency
- Current cycle
Mass spectrometry confirmed the labelled compound
Label claimed ≥99%
4.94mg measured against 5mg claimed
Published 13 months ago
Specimen PI-LAB-2025-108 Tested by Cornerstone Analytical 12 samples tested from this company Purity & Testing score 89/100
Full laboratory evidence Findings table, methodology, chain of custody and the original report
Findings
| Metric | Label claim | Measured | Assessment |
|---|---|---|---|
| Purity (HPLC) | ≥ 99% | 97.3% | Materially below claim |
| Identity (MS) | Retatrutide | Confirmed | Matches label |
| Content | 5 mg | 4.94 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
- C6783-25
- Purchased
- Analysed
- Published
- Laboratory
- Cornerstone Analytical
- Test type
- Content verification
Testing notes
Company was notified before publication and given the standard dispute window.
Original laboratory report: PI-LAB-2025-108-report.pdf