Reta-Peptide
Tirzepatide
Finnrick tested 16 samples of Tirzepatide (GLP-1 and GIP agonist) from Reta-Peptide between 20 Jun 2025 and 25 Nov 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™
Reta-Peptide
Tirzepatide
Tested 16 Samples
Last test 25 Nov 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 Reta-Peptide
Samples are tested in commercial labs
Tests Count
16
Scores
AVGMINMAX
Last
25 Nov 2025
First
20 Jun 2025
| Quantity | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Test Date | Certificate | Test Score | Label | Tested | Difference | Purity | Endotoxins | Batch ID | Container | Tested At | Sent By |
| 25 Nov 2025 | View | 30mg | 29.5mg | -1.7% | 99.91% | not detected | October 8, 2025 | No Label / Silver Crimp / Green Cap | Lab E | Public | |
| 6 Nov 2025 | View | 30mg | 30mg | 99.95% | n/a | 10/17/2025 | No Label / Silver Crimp / Pink Cap | Lab E | Public | ||
| 5 Nov 2025 | View | 30mg | 34.61mg | +15.4% | 99.90% | n/a | 91625 | White Label / Silver Crimp / Pink Cap | Lab G | Public | |
| 23 Oct 2025 | View | 20mg | 19.9mg | -0.5% | 99.53% | n/a | (no batch ID) | No Label / Silver Crimp / Violet Cap | Lab E | Public | |
| 9 Oct 2025 | View | 60mg | 64.1mg | +6.8% | 99.83% | n/a | (no batch ID) | White Label / Silver Crimp / Blue Cap | Lab E | Public | |
| 3 Oct 2025 | View | 20mg | 20.6mg | +3.0% | 99.95% | n/a | (no batch ID) | No Label / Silver Crimp / Violet Cap | Lab E | Public | |
| 1 Oct 2025 | View | 20mg | 24.4mg | +22.0% | 99.90% | n/a | (no batch ID) | White Label / Copper Crimp / Violet Cap | Lab G | Public | |
| 1 Oct 2025 | View | 5mg | 5.8mg | +16.0% | 99.60% | n/a | (no batch ID) | White Label / Copper Crimp / Black Cap | Lab G | Public | |
| 18 Sep 2025 | View | 30mg | 31.8mg | +6.0% | 99.95% | n/a | (no batch ID) | No Label / Silver Crimp / Green Cap | Lab E | Public | |
| 4 Sep 2025 | View | 15mg | 14.8mg | -1.3% | 99.95% | n/a | (no batch ID) | Clear Label / Silver Crimp / Clear Pink Cap | Lab E | Public | |
| 4 Sep 2025 | View | 30mg | 29.8mg | -0.7% | 99.95% | n/a | 7.30.25 | White Label / Silver Crimp / Clear Cap | Lab E | Public | |
| 4 Sep 2025 | View | 5mg | 5.15mg | +3.0% | 99.62% | n/a | July 17, 2025 | No Label / Silver Crimp / White Cap | Lab E | Public | |
| 21 Aug 2025 | View | 30mg | 31.9mg | +6.3% | 99.75% | n/a | (no batch ID) | No Label / Silver Crimp / Violet Cap | Lab E | Public | |
| 25 Jul 2025 | View | 20mg | 19.5mg | -2.5% | 99.95% | n/a | (no batch ID) | White Label / Silver Crimp / Violet Cap | Lab E | Public | |
| 16 Jul 2025 | View | 30mg | 30.3mg | +1.0% | 99.87% | n/a | (no batch ID) | No Label / Silver Crimp / Pink Cap | Lab E | Public | |
| 20 Jun 2025 | View | 20mg | 18.7mg | -6.5% | 99.83% | n/a | (no batch ID) | White Label / Silver Crimp / Purple Cap | Lab E | Public | |