Peptide Partners
Tirzepatide
Finnrick tested 6 samples of Tirzepatide (GLP-1 and GIP agonist) from Peptide Partners between 11 Jun 2025 and 3 Oct 2025. Test scores average over 5, no score below 4, and at least 6 tests warrant a confident Finnrick Rating of C (Okay).
Finnrick Rating™
Peptide Partners
Tirzepatide
Tested 6 Samples
Last test 3 Oct 2025
Take Action
Researcher
Request Full Data Access to the Finnrick database of peptide tests.
Free peptide testing
Mail in a sample (US only) to get confidence for the specific vials you have, and contribute to identifying unsafe supply chains, so other people can avoid risky and costly mistakes.
Other Tirzepatide tests from top-rated vendors:
All Tirzepatide tests from Peptide Partners
Samples are tested in commercial labs
Tests Count
6
Scores
AVGMINMAX
Last
3 Oct 2025
First
11 Jun 2025
| Quantity | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Test Date | Certificate | Test Score | Label | Tested | Difference | Purity | Batch ID | Container | Tested At | Sent By |
| 3 Oct 2025 | View | 40mg | 36.9mg | -7.8% | 99.83% | TZ20250730 | White Label / Silver Crimp / Black Cap | Lab E | Public | |
| 3 Oct 2025 | View | 40mg | 38mg | -5.0% | 99.83% | TZ20250730 | White Label / Silver Crimp / Black Cap | Lab E | Public | |
| 3 Oct 2025 | View | 40mg | 36.3mg | -9.3% | 99.87% | TZ20250730 | White Label / Silver Crimp / Black Cap | Lab E | Public | |
| 29 Sep 2025 | View | 40mg | ⚠️ Sample does not contain Tirzepatide | TZ20250730 | No Label / Silver Crimp / Brown Cap | Lab B | Vendor | |||
| 9 Sep 2025 | View | 40mg | 40.32mg | +0.8% | 99.52% | TZ20250730 | No Label / Silver Crimp / BrownCap | Lab B | Vendor | |
| 9 Sep 2025 | View | 40mg | 42.15mg | +5.4% | 99.46% | TZ20250730 | No Label / Silver Crimp / Brown Cap | Lab B | Vendor | |
| 11 Jun 2025 | View | 30mg | 19.9mg | -33.7% | 99.65% | (no batch ID) | No Label / Silver Crimp / Black Cap | Lab E | Public | |