Royal Peptides
Retatrutide
Finnrick tested 14 samples of Retatrutide (GLP-1, GIP, and GCGR agonist) from Royal Peptides between 16 Mar 2025 and 13 Mar 2026. Test scores average over 5, no score below 4, and at least 6 tests warrant a confident Finnrick Rating of C (Okay).
Finnrick Rating™
Royal Peptides
Retatrutide
Tested 14 Samples
Last test 13 Mar 2026
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
14
Scores
AVGMINMAX
Last
13 Mar 2026
First
16 Mar 2025
| Quantity | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Test Date | Certificate | Test Score | Label | Tested | Difference | Purity | Endotoxins | Batch ID | Container | Tested At | Sent By |
| 13 Mar 2026 | View | 15mg | 14.6mg | -2.7% | 99.80% | n/a | (no batch ID) | No Label / Copper Crimp / Clear Cap | Lab G | Public | |
| 1 Mar 2026 | View | 40mg | 34.1mg | -14.8% | 99.80% | n/a | (no batch ID) | No Label / Gold Crimp / Clear Cap | Lab G | Public | |
| 22 Feb 2026 | View | 30mg | 32.7mg | +9.0% | 98.78% | n/a | Nov 2, 2025 | No Label / Silver Crimp / Pink Cap | Lab E | Public | |
| 22 Feb 2026 | View | 30mg | 31.9mg | +6.3% | 99.90% | n/a | (no batch ID) | No Label / Silver Crimp / Pink Cap | Lab E | Public | |
| 11 Feb 2026 | View | 5mg | 5.37mg | +7.4% | 99.90% | n/a | (no batch ID) | No Label / Silver Crimp / Yellow Cap | Lab E | Public | |
| 29 Jan 2026⚠️ | View | 23mg | 11.4mg | -50.4% | 99.95% | below LOQ | (no batch ID) | No Label / Copper Crimp / Clear Cap | Lab E | Public | |
| 19 Jan 2026 | View | 10mg | 10.9mg | +9.0% | 99.95% | n/a | RP-RET10-1125 | Blue Label / Silver Crimp / Clear Blue Cap | Lab E | Public | |
| 21 Oct 2025 | View | 10mg | 9.69mg | -3.1% | 99.38% | n/a | June 2 2025 | No Label / Silver Crimp / Yellow Cap | Lab E | Public | |
| 26 Mar 2025 | View | 10mg | 10.17mg | +1.7% | 98.93% | n/a | (no batch ID) | No Label / Silver Crimp / Blue Cap | Lab C | Finnrick | |
| 26 Mar 2025 | View | 10mg | 10.14mg | +1.4% | 98.86% | n/a | (no batch ID) | No Label / Silver Crimp / Blue Cap | Lab C | Finnrick | |
| 26 Mar 2025 | View | 10mg | 10.2mg | +2.0% | 98.78% | n/a | (no batch ID) | No Label / Silver Crimp / Blue Cap | Lab C | Finnrick | |
| 16 Mar 2025 | View | 10mg | 9.76mg | -2.4% | 99.71% | n/a | (no batch ID) | No Label / Silver Crimp / Blue Cap | Lab A | Finnrick | |
| 16 Mar 2025 | View | 10mg | 9.75mg | -2.5% | 99.72% | n/a | (no batch ID) | No Label / Silver Crimp / Blue Cap | Lab A | Finnrick | |
| 16 Mar 2025 | View | 10mg | 9.61mg | -3.9% | 99.71% | n/a | (no batch ID) | No Label / Silver Crimp / Blue Cap | Lab A | Finnrick | |