Independent testing verdict Pass
This product matched its label.
Identity confirmed and measured purity of 99.2% met the stated ≥99.5% claim. Content measured 99.2% of label.
- Identity verified
- Yes
- Measured purity
- 99.2%
- Content accuracy
- 99.2%
- Test recency
- Older result
Mass spectrometry confirmed the labelled compound
Label claimed ≥99.5%
4.96mg measured against 5mg claimed
Published 18 months ago
Specimen PI-LAB-2025-192 Tested by Vantage Analytical Labs 10 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) | ≥ 99.5% | 99.2% | Within analytical tolerance |
| Identity (MS) | Tirzepatide | Confirmed | Matches label |
| Content | 5 mg | 4.96 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 Vantage Analytical Labs. See our full testing methodology.
- Lot / batch
- B8379-25
- Purchased
- Analysed
- Published
- Laboratory
- Vantage Analytical Labs
- Test type
- Full panel (purity, identity, content, endotoxin)
Original laboratory report: PI-LAB-2025-192-report.pdf