Qingdao Sigma Chemical QSC
GHK-Cu
Finnrick tested 5 samples of GHK-Cu from Qingdao Sigma Chemical QSC between 21 Oct 2025 and 23 Jul 2026. Fraud: Based on community reports, we have identified qingdaosigmachemical.com as a fraudulent web site aggressively operating in the name of this vendor. It is most likely entirely unaffiliated with the original company, the fraud is putting the public at risk, so we are temporarily putting all tests under review.
Finnrick Rating™
Tentative Rating
Qingdao Sigma Chemical QSC
GHK-Cu
Tested 5 Samples
Last test 23 Jul 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 GHK-Cu tests from top-rated vendors:
All GHK-Cu tests from Qingdao Sigma Chemical QSC
Samples are tested in commercial labs
Tests Count
5
Scores
AVGMINMAX
Last
23 Jul 2026
First
21 Oct 2025
| Quantity | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Test Date | Certificate | Test Score | Label | Tested | Difference | Purity | Endotoxins | Batch ID | Container | Tested At | Sent By |
| 23 Jul 2026 | View | 50mg | 45.9mg | -8.2% | 99.90% | n/a | Cu50 wht cap 042026 qsc | No label / Silver crimp / White cap | Lab E | Public | |
| 13 May 2026⚠️ | View | 100mg | 89.3mg | -10.7% | 99.30% | n/a | blue cap | No Label / Silver Crimp / Blue Cap | Lab E | Public | |
| 10 Mar 2026⚠️ | View | 100mg | 86.6mg | -13.4% | 99.90% | below LOQ | (no batch ID) | No Label / Silver Crimp / Blue Cap | Lab E | Public | |
| 4 Mar 2026⚠️ | View | 100mg | 151.5mg | +51.5% | 99.60% | n/a | Blue Cap | No Label / Silver Crimp / Blue Cap | Lab G | Public | |
| 21 Oct 2025⚠️ | View | 75mg | 86.2mg | +14.9% | 99.95% | n/a | A013GHK-75 | White Label / Silver Crimp / White Cap | Lab E | Public | |