Welon Peptide Solutions
Retatrutide
Finnrick tested 5 samples of Retatrutide (GLP-1, GIP, and GCGR agonist) from Welon Peptide Solutions between 23 Nov 2025 and 22 Feb 2026. Test scores average over 4, no score below 3, and at least 2 tests warrant a tentative Finnrick Rating of D (Poor).
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Other Retatrutide tests from top-rated vendors:
All Retatrutide tests from Welon Peptide Solutions
Samples are tested in commercial labs
Tests Count
Scores
Last
First
| Quantity | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Test Date | Certificate | Test Score | Label | Tested | Difference | Purity | Endotoxins | Batch ID | Container | Tested At | Sent By |
| 22 Feb 2026 | View | 10mg | 9.74mg | -2.6% | 99.84% | low | (no batch ID) | No Label / Silver Crimp / Green Cap | Lab E | Public | |
| 20 Feb 2026 | View | 10mg | 9.22mg | -7.8% | 99.88% | n/a | (no batch ID) | No Label / Silver Crimp / Yellow Cap | Lab E | Public | |
| 4 Feb 2026 | View | 10mg | 10.3mg | +3.0% | 99.40% | n/a | (no batch ID) | No Label / Silver Crimp / Clear Blue Cap | Lab G | Vendor | |
| 4 Feb 2026 | View | 10mg | 10mg | 99.50% | n/a | (no batch ID) | No Label / Silver Crimp / Clear Blue Cap | Lab G | Vendor | ||
| 23 Nov 2025 | View | 15mg | 21.7mg | +44.7% | 99.30% | n/a | (no batch ID) | White Label / Copper Crimp / Clear Cap | Lab G | Public | |
Launch with Finnrick
Some of the samples listed on this page were submitted by their vendor, as part of the Launch with Finnrick vendor support program.
The program is designed to help vendors get listed on the Finnrick web site while protecting the integrity of our rating system.
The vendor submitted four samples per product, two of which were tested by Finnrick for identity, purity and quantity according to our usual process. The vials were anonymized before being sent to the testing lab.