ZLZ Peptide
Semaglutide
Finnrick tested 7 samples of Semaglutide (GLP-1 agonist) from ZLZ Peptide between 11 Jun 2025 and 26 Jan 2026. Test scores average below 4 or some scores below 3, and at least 6 tests, warrant a confident Finnrick Rating of E (Bad).
Finnrick Rating™
ZLZ Peptide
Semaglutide
Tested 7 Samples
Last test 26 Jan 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 Semaglutide tests from top-rated vendors:
All Semaglutide tests from ZLZ Peptide
Samples are tested in commercial labs
Tests Count
7
Scores
AVGMINMAX
Last
26 Jan 2026
First
11 Jun 2025
| Quantity | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Test Date | Certificate | Test Score | Label | Tested | Difference | Purity | Batch ID | Container | Tested At | Sent By |
| 26 Jan 2026 | View | 30mg | 25.3mg | -15.7% | 99.90% | (no batch ID) | No Label / Silver Crimp / Clear Pink Cap | Lab G | Public | |
| 15 Jan 2026 | View | 15mg | 18.9mg | +26.0% | 99.80% | ZLZ S15 - (B) | No Label / Black Crimp / Clear Cap | Lab G | Public | |
| 11 Dec 2025 | View | 15mg | 14.6mg | -2.7% | 99.85% | (no batch ID) | No Label / Copper Crimp / Clear Cap | Lab E | Public | |
| 14 Oct 2025 | View | 20mg | 23.5mg | +17.5% | 99.90% | (no batch ID) | No Label / Silver Crimp / Violet Cap | Lab G | Public | |
| 25 Sep 2025 | View | 10mg | 10.4mg | +4.0% | 99.81% | (no batch ID) | No Label / Silver Crimp / White Cap | Lab E | Public | |
| 29 Jun 2025 | View | 15mg | 9.4mg | -37.3% | 98.74% | (no batch ID) | No Label / Silver Crimp / Black Cap | Lab E | Public | |
| 11 Jun 2025 | View | 5mg | 4.48mg | -10.4% | 98.61% | (no batch ID) | No Label / Silver Crimp / Green Cap | Lab E | Public | |