Tirz Peptide
Retatrutide
Finnrick tested 4 samples of Retatrutide (GLP-1, GIP, and GCGR agonist) from Tirz Peptide between 26 Jan 2026 and 4 Aug 2026. Test scores average over 6, no score below 5, and at least 2 tests warrant a tentative Finnrick Rating of B (Good).
Finnrick Rating™
Tentative Rating
Tirz Peptide
Retatrutide
Tested 4 Samples
Last test 4 Aug 2026
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Samples are tested in commercial labs
Tests Count
4
Scores
AVGMINMAX
Last
4 Aug 2026
First
26 Jan 2026
| Quantity | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Test Date | Certificate | Test Score | Label | Tested | Difference | Purity | Endotoxins | Batch ID | Container | Tested At | Sent By |
| 4 Aug 2026 | View | 10mg | 7.26mg | -27.4% | 99.90% | not detected | 06/22/2026 | No label / Silver crimp / Black cap | Lab E | Public | |
| 23 Apr 2026 | View | 30mg | 33.3mg | +11.0% | 99.90% | below LOQ | RT30 | No Label / Silver Crimp / Purple Cap | Lab E | Public | |
| 11 Feb 2026 | View | 20mg | 19.2mg | -4.0% | 99.90% | n/a | (no batch ID) | No Label / Silver Crimp / Red Cap | Lab E | Public | |
| 26 Jan 2026 | View | 20mg | 18.2mg | -9.0% | 99.50% | n/a | (no batch ID) | No Label / Silver Crimp / Red Cap | Lab E | Public | |