Zhejiang Yichenkang Biotechnology
Retatrutide
Finnrick tested 11 samples of Retatrutide (GLP-1, GIP, and GCGR agonist) from Zhejiang Yichenkang Biotechnology between 2 Dec 2024 and 11 Dec 2025. Test scores average over 4, no score below 3, and at least 6 tests warrant a confident Finnrick Rating of D (Poor).
Finnrick Rating™
Zhejiang Yichenkang Biotechnology
Retatrutide
Tested 11 Samples
Last test 11 Dec 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 Retatrutide tests from top-rated vendors:
All Retatrutide tests from Zhejiang Yichenkang Biotechnology
Samples are tested in commercial labs
Tests Count
11
Scores
AVGMINMAX
Last
11 Dec 2025
First
2 Dec 2024
| Quantity | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Test Date | Certificate | Test Score | Label | Tested | Difference | Purity | Endotoxins | Batch ID | Container | Tested At | Sent By |
| 11 Dec 2025 | View | 10mg | 10.4mg | +4.0% | 99.62% | n/a | (no batch ID) | No Label / Silver Crimp / Clear Blue Cap | Lab E | Public | |
| 25 Nov 2025 | View | 10mg | 9.95mg | -0.5% | 99.95% | n/a | 608040-10/23/2025 | No Label / Blue Crimp / Blue Cap | Lab E | Public | |
| 17 Oct 2025 | View | 40mg | 40.6mg | +1.5% | 99.95% | n/a | (no batch ID) | No Label / Silver Crimp / Black Cap | Lab E | Public | |
| 5 Aug 2025 | View | 5mg | 5.45mg | +9.0% | 99.29% | n/a | (no batch ID) | (no data) | Lab D | Finnrick | |
| 4 Aug 2025 | View | 20mg | 18.8mg | -6.0% | 99.94% | n/a | (no batch ID) | No Label / Copper Crimp / Clear Cap | Lab E | Public | |
| 23 Jul 2025 | View | 5mg | 5.3mg | +6.0% | 100.00% | n/a | (no batch ID) | (no data) | Lab G | Finnrick | |
| 23 Jul 2025 | View | 5mg | 4.8mg | -4.0% | 100.00% | n/a | (no batch ID) | (no data) | Lab G | Finnrick | |
| 11 Jul 2025 | View | Endotoxins | 5mg | n/a | n/a | n/a | not detected | (no batch ID) | (no data) | Lab E | Finnrick |
| 25 Jun 2025 | View | 5mg | 4.98mg | -0.4% | 99.67% | n/a | (no batch ID) | (no data) | Lab A | Finnrick | |
| 25 Jun 2025 | View | 5mg | 5.19mg | +3.8% | 99.59% | n/a | (no batch ID) | (no data) | Lab A | Finnrick | |
| 11 Jun 2025 | View | 5mg | 4.01mg | -19.8% | 99.16% | n/a | (no batch ID) | (no data) | Lab E | Finnrick | |
| 2 Dec 2024 | View | 10mg | 9.2mg | -8.0% | 99.40% | n/a | (no batch ID) | No Label / Silver Crimp / Red Cap | Lab G | Public | |