YB Peptide
Retatrutide
Finnrick tested 5 samples of Retatrutide (GLP-1, GIP, and GCGR agonist) from YB Peptide between 21 Aug 2025 and 29 Dec 2025. Test scores average over 7, no score below 6, and at least 2 tests warrant a tentative Finnrick Rating of A (Great).
Finnrick Rating™
Tentative Rating
YB Peptide
Retatrutide
Tested 5 Samples
Last test 29 Dec 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 Retatrutide tests from top-rated vendors:
All Retatrutide tests from YB Peptide
Samples are tested in commercial labs
Tests Count
5
Scores
AVGMINMAX
Last
29 Dec 2025
First
21 Aug 2025
| Quantity | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Test Date | Certificate | Test Score | Label | Tested | Difference | Purity | Batch ID | Container | Tested At | Sent By |
| 29 Dec 2025 | View | 20mg | 21.6mg | +8.0% | 99.70% | 12032025RT20 | White Label / Copper Crimp / Clear Cap | Lab G | Public | |
| 25 Nov 2025 | View | 10mg | 9.85mg | -1.5% | 99.95% | (no batch ID) | No Label / Silver Crimp / Clear Green Cap | Lab E | Public | |
| 18 Sep 2025 | View | 10mg | 9mg | -10.0% | 99.95% | June 5, 2025 | No Label / Blue Crimp / Clear Cap | Lab E | Public | |
| 15 Sep 2025 | View | 10mg | 9.69mg | -3.1% | 99.68% | (no batch ID) | No Label / Silver Crimp / Blue Cap | Lab E | Public | |
| 21 Aug 2025 | View | 10mg | 10.1mg | +1.0% | 99.93% | (no batch ID) | No Label / Silver Crimp / Clear Blue Cap | Lab E | Public | |