GHK-Cu × skye peptides — lab test, November 2025
Janoshik Labs publishes a public verification portal. Any test attributed to this lab can be looked up and confirmed directly with the lab — so this result doesn't rest on our review alone.
This certificate carries no lookup code.
Test results
This is a purity and identity analysis. Sterility, endotoxins, and heavy metals were not screened — a high purity figure says nothing about those.
About this test
Label 50 mg · Lab measured 67.18 mg
134% of label, basis not stated — shown as printed. Reconstituted with 2 mL, a 50-unit draw holds 16.8 mg using the measured mass, against 12.5 mg on the label — 34% more.
One vial from this lot was weighed by the laboratory, not yours. This page reports what the certificate says; it does not recommend a dose.
Independent HPLC purity analysis of GHK-Cu from skye peptides, performed by Janoshik Labs on November 5, 2025. Reported purity: 99.654%. Net content: 67.18 mg against 50 mg labeled (134% of label). Tested content exceeds the labeled amount by 34%. Batch GHK25-50-002. Sample source: shop-provided. Certificate of analysis attached.
Certificate of analysis
Other lots of GHK-Cu from skye peptides
| Lot | Tested | Lab | Purity | vs label | Status |
|---|---|---|---|---|---|
| GHK25-50-001 | 30 Oct 2025 | Janoshik Labs | 99.565% | 116% | Unverified |
| GHKB25-100-001 | 14 Oct 2025 | Janoshik Labs | 99.81% | 119% | Unverified |
| GHK25-100-002 | 16 Jul 2025 | Janoshik Labs | 99.905% | 108% | Unverified |
| GHKT25-1000-001 | 9 Jul 2025 | Janoshik Labs | 99.89% | 100% | Unverified |
| GHK100N041025 | 29 Apr 2025 | Janoshik Labs | 99.925% | 104% | Unverified |
| GHKC25-100-001 | 12 Mar 2025 | Janoshik Labs | 99.987% | 89% | Unverified |
| GHK50N12182024 | 2 Jan 2025 | Janoshik Labs | 99.945% | 107% | Unverified |
| AHKR24-1-001 | 23 Dec 2024 | Janoshik Labs | 99.934% | 98% | Unverified |
Batches this shop has published a certificate for, newest first. A lot whose printed value cannot identify a batch is not listed.
Have you tested this peptide?
Submit your third-party lab test to help the community verify purity claims. Every report is reviewed before publication.
Community discussion