Shanghai Leader Peptide Biotechnology
Tirzepatide
Finnrick tested 8 samples of Tirzepatide (GLP-1 and GIP agonist) from Shanghai Leader Peptide Biotechnology between 11 Feb 2026 and 8 May 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™
Shanghai Leader Peptide Biotechnology
Tirzepatide
Tested 8 Samples
Last test 8 May 2026
Take Action
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 Shanghai Leader Peptide Biotechnology
Samples are tested in commercial labs
Tests Count
8
Scores
AVGMINMAX
Last
8 May 2026
First
11 Feb 2026
| Quantity | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Test Date | Certificate | Test Score | Label | Tested | Difference | Purity | Endotoxins | Batch ID | Container | Tested At | Sent By |
| 8 May 2026 | View | 10mg | 10.7mg | +7.0% | 99.90% | n/a | (no batch ID) | No Label / Silver Crimp / Black Cap | Lab E | Public | |
| 13 Apr 2026 | View | 30mg | 33.5mg | +11.7% | 99.70% | n/a | TIRZ-30-0001 | No Label / Silver Crimp / Black Cap | Lab G | Public | |
| 13 Apr 2026 | View | Endotoxins | 30mg | n/a | n/a | n/a | low | TIRZ-30-0001 | No Label / Silver Crimp / Black Cap | Lab G | Public |
| 2 Apr 2026 | View | 20mg | 20.3mg | +1.5% | 99.70% | n/a | (no batch ID) | No Label / Silver Crimp / White Cap | Lab G | Public | |
| 10 Mar 2026 | View | 20mg | 19.4mg | -3.0% | 99.90% | n/a | 2026/03 | (no data) | Lab E | Public | |
| 4 Mar 2026 | View | 20mg | ⚠️ Sample does not contain Tirzepatide | n/a | (no batch ID) | No Label / Silver Crimp / White Cap | Lab E | Public | |||
| 2 Mar 2026 | View | 10mg | 8.62mg | -13.8% | 99.90% | n/a | (no batch ID) | No Label / Silver Crimp / Black Cap | Lab E | Public | |
| 26 Feb 2026 | View | 15mg | 16mg | +6.7% | 99.90% | n/a | (no batch ID) | No Label / Silver Crimp / Black Cap | Lab E | Public | |
| 11 Feb 2026 | View | 40mg | 33.2mg | -17.0% | 99.90% | n/a | (no batch ID) | No Label / Silver Crimp / Red Cap | Lab E | Public | |