GHK-Cu × Uther — lab test, June 2026
COA GY5-WB9 matches Uzorak's public record. So this test doesn't rest on our review alone — the lab confirms it too.
GY5-WB9Test results
Not on file for this certificate: endotoxins, sterility and heavy metals. A purity figure says nothing about those.
About this test
Label 50 mg · Lab measured 65.08 mg
130% of label, basis not stated — shown as printed. Reconstituted with 2 mL, a 50-unit draw holds 16.3 mg using the measured mass, against 12.5 mg on the label — 30% 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.
| Report number | GY5-WB9 |
|---|---|
| Portal lookup | ✓ Lab-verified |
| PDF vs portal | Uzorak's portal shows validity only |
| Weight | Counts as one lab test |
Independent HPLC purity analysis of GHK-Cu from Uther, performed by Uzorak on June 10, 2026. Reported purity: 99.73%. Net content: 65.08 mg against 50 mg labeled (130% of label). Tested content exceeds the labeled amount by 30%. Sample source: shop-provided. Certificate of analysis attached.
Certificate of analysis
Other lots of GHK-Cu from Uther
| Lot | Tested | Lab | Purity | vs label | Status |
|---|---|---|---|---|---|
| HK100-0523 | 10 Jun 2026 | Uzorak | 99.68% | 127% | Unverified |
| HK100-0517 | 2 Jun 2026 | Uzorak | 99.87% | 122% | Unverified |
| HK50-0517 | 2 Jun 2026 | Uzorak | 99.63% | 115% | Unverified |
| Hk1001009 | 27 Oct 2025 | Janoshik Labs | 99.834% | 128% | ✓ Lab-verified |
| HK500917 | 25 Sept 2025 | Janoshik Labs | 99.934% | 108% | ✓ Lab-verified |
| HK1000916 | 25 Sept 2025 | Janoshik Labs | 99.852% | 109% | ✓ Lab-verified |
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