Royal Peptides
Retatrutide
Finnrick tested 7 samples of Retatrutide (GLP-1, GIP, and GCGR agonist) from Royal Peptides between 16 Mar 2025 and 21 Oct 2025. Test scores average over 6, no score below 5, and at least 6 tests warrant a confident Finnrick Rating of B (Good).
Finnrick Rating™
Royal Peptides
Retatrutide
Tested 7 Samples
Last test 21 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 Retatrutide tests from top-rated vendors:
All Retatrutide tests from Royal Peptides
Samples are tested in commercial labs
Tests Count
7
Scores
AVGMINMAX
Last
21 Oct 2025
First
16 Mar 2025
| Quantity | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Test Date | Certificate | Test Score | Label | Tested | Difference | Purity | Batch ID | Container | Tested At | Sent By |
| 21 Oct 2025 | View | 10mg | 9.69mg | -3.1% | 99.38% | June 2 2025 | No Label / Silver Crimp / Yellow Cap | Lab E | Public | |
| 26 Mar 2025 | View | 10mg | 10.17mg | +1.7% | 98.93% | (no batch ID) | No Label / Silver Crimp / Blue Cap | Lab C | Finnrick | |
| 26 Mar 2025 | View | 10mg | 10.14mg | +1.4% | 98.86% | (no batch ID) | No Label / Silver Crimp / Blue Cap | Lab C | Finnrick | |
| 26 Mar 2025 | View | 10mg | 10.2mg | +2.0% | 98.78% | (no batch ID) | No Label / Silver Crimp / Blue Cap | Lab C | Finnrick | |
| 16 Mar 2025 | View | 10mg | 9.76mg | -2.4% | 99.71% | (no batch ID) | No Label / Silver Crimp / Blue Cap | Lab A | Finnrick | |
| 16 Mar 2025 | View | 10mg | 9.75mg | -2.5% | 99.72% | (no batch ID) | No Label / Silver Crimp / Blue Cap | Lab A | Finnrick | |
| 16 Mar 2025 | View | 10mg | 9.61mg | -3.9% | 99.71% | (no batch ID) | No Label / Silver Crimp / Blue Cap | Lab A | Finnrick | |