Independent testing verdict Pass
This product matched its label.
Identity confirmed and measured purity of 94% met the stated ≥95% claim. Content measured 100.2% of label.
- Identity verified
- Yes
- Measured purity
- 94.0%
- Content accuracy
- 100.2%
- Test recency
- Older result
Mass spectrometry confirmed the labelled compound
Label claimed ≥95%
5.01mg measured against 5mg claimed
Published 14 months ago
Specimen PI-LAB-2025-199 Tested by Cornerstone Analytical 8 samples tested from this company Purity & Testing score 81/100
Full laboratory evidence Findings table, methodology, chain of custody and the original report
Findings
| Metric | Label claim | Measured | Assessment |
|---|---|---|---|
| Purity (HPLC) | ≥ 95% | 94% | Within analytical tolerance |
| Identity (MS) | Retatrutide | Confirmed | Matches label |
| Content | 5 mg | 5.01 mg | Within 5% of label |
Methodology & chain of custody
RP-HPLC purity with electrospray ionisation mass confirmation.
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
- A2685-25
- Purchased
- Analysed
- Published
- Laboratory
- Cornerstone Analytical
- Test type
- Purity, identity & content
Original laboratory report: PI-LAB-2025-199-report.pdf