ZLZ Peptide
Tirzepatide
Finnrick tested 11 samples of Tirzepatide (GLP-1 and GIP antagonist) from ZLZ Peptide between 20 Jun 2025 and 10 Sep 2025. Test scores average over 7, no score below 6, and at least 6 tests warrant a confident Finnrick Rating of A (Great).
Finnrick Rating™
ZLZ Peptide
Tirzepatide
Tested 11 Samples
Last test 10 Sep 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 Tirzepatide tests from top-rated vendors:
All Tirzepatide tests from ZLZ Peptide
Samples are tested in commercial labs
Tests Count
11
Scores
AVGMINMAX
Last
10 Sep 2025
First
20 Jun 2025
| Quantity | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Test Date | Certificate | Test Score | Label | Tested | Difference | Purity | Batch ID | Container | Tested At | Sent By |
| 10 Sep 2025 | View | 20mg | 20.100mg | +0.5% | 99.95% | (no batch ID) | No Label / Silver Crimp / Gray Cap | Lab E | Public | |
| 10 Sep 2025 | View | 10mg | 10.200mg | +2.0% | 99.91% | (no batch ID) | No Label / Silver Crimp / White Cap | Lab E | Public | |
| 4 Sep 2025 | View | 30mg | 28.900mg | -3.7% | 99.95% | 8JUN25 | No Label / Silver Crimp / Black Cap | Lab E | Public | |
| 4 Sep 2025 | View | 30mg | 31.100mg | +3.7% | 99.91% | (no batch ID) | No Label / Ccpper Crimp / Clear Cap | Lab E | Public | |
| 5 Aug 2025 | View | 20mg | 18.500mg | -7.5% | 99.95% | (no batch ID) | White Label / Silver Crimp / Violet Cap | Lab E | Public | |
| 5 Aug 2025 | View | 30mg | 30.600mg | +2.0% | 99.58% | (no batch ID) | No Label / Copper Crimp / Clear Cap | Lab E | Public | |
| 5 Aug 2025 | View | 10mg | 9.310mg | -6.9% | 99.95% | (no batch ID) | No Label / Silver Crimp / White Cap | Lab E | Public | |
| 17 Jul 2025 | View | 20mg | 19.200mg | -4.0% | 99.93% | (no batch ID) | No Label / Silver Crimp / Violet Cap | Lab E | Public | |
| 17 Jul 2025 | View | 10mg | 10.700mg | +7.0% | 99.95% | (no batch ID) | No Label / Silver Crimp / White Cap | Lab E | Public | |
| 17 Jul 2025 | View | 20mg | 19.400mg | -3.0% | 99.95% | (no batch ID) | No Label / Silver Crimp / Violet Cap | Lab E | Public | |
| 20 Jun 2025 | View | 20mg | 20.000mg | 99.87% | (no batch ID) | No Label / Silver Crimp / Grey Cap | Lab E | Public | ||