Independent testing verdict Pass
This product matched its label.
Identity confirmed and measured purity of 97.5% met the stated ≥98% claim. Content measured 98.7% of label.
- Identity verified
- Yes
- Measured purity
- 97.5%
- Content accuracy
- 98.7%
- Test recency
- Older result
Mass spectrometry confirmed the labelled compound
Label claimed ≥98%
9.87mg measured against 10mg claimed
Published 18 months ago
Specimen PI-LAB-2025-074 Tested by Cornerstone Analytical 20 samples tested from this company Purity & Testing score 87/100
Full laboratory evidence Findings table, methodology, chain of custody and the original report
Findings
| Metric | Label claim | Measured | Assessment |
|---|---|---|---|
| Purity (HPLC) | ≥ 98% | 97.5% | Within analytical tolerance |
| Identity (MS) | TB-500 | Confirmed | Matches label |
| Content | 10 mg | 9.87 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
- B8465-25
- Purchased
- Analysed
- Published
- Laboratory
- Cornerstone Analytical
- Test type
- Purity, identity & content
Original laboratory report: PI-LAB-2025-074-report.pdf