YuYi peptide
Retatrutide
Finnrick tested 4 samples of Retatrutide (GLP-1, GIP, and GCGR agonist) from YuYi peptide between 29 Dec 2025 and 16 Jun 2026. Test scores average below 4 or some scores below 3, and at least 2 tests, warrant a tentative Finnrick Rating of E (Bad).
Finnrick Rating™
Tentative Rating
YuYi peptide
Retatrutide
Tested 4 Samples
Last test 16 Jun 2026
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Samples are tested in commercial labs
Tests Count
4
Scores
AVGMINMAX
Last
16 Jun 2026
First
29 Dec 2025
| Quantity | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Test Date | Certificate | Test Score | Label | Tested | Difference | Purity | Batch ID | Container | Tested At | Sent By |
| 16 Jun 2026 | View | 5mg | 5.1mg | +2.0% | 99.70% | 03192026 | White label / Silver crimp / Yellow cap | Lab G | Public | |
| 22 Jan 2026 | View | 10mg | 9.8mg | -2.0% | 99.80% | (no batch ID) | White Label / Silver Crimp / Green Cap | Lab G | Public | |
| 15 Jan 2026 | View | 10mg | 9.9mg | -1.0% | 99.70% | (no batch ID) | No Label / Silver Crimp / Teal Cap | Lab G | Public | |
| 29 Dec 2025 | View | 10mg | ⚠️ Sample does not contain Retatrutide | (no batch ID) | No Label / Silver Crimp / Blue Cap | Lab E | Public | |||