§ CERTIFICATE OF ANALYSIS · THIRD-PARTY HPLC · JAN-2026● VERIFIED SUBMISSION · PUBLIC RECORD

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◆ Batch ID · N/A✓ Verified · Pass

GHK-Cu × Penguin Peptides - Lab Test, January 2026

Tested Tuesday, January 20, 2026 · submitted by @Frank 👑 Legend

HPLC Purity

99.55%

✓ Excellent

PeptideGHK-Cu

BrandPenguin Peptides

LabJanoshik Labs

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Test results

6 data points

Purity

99.55%

Endotoxins

Not tested

Stated qty

100 mg

Tested qty

112.46 mg

Qty match

112% of labeled · +12%

Batch ID

N/A

Tested by

Janoshik LabsView profile →

◆ Quantity verification

100 mg→112.46 mg+12%

About this test

This independent lab test confirms GHK-Cu 100mg from Penguin Peptides at 99.547% purity with an actual measured content of 112.46 mg. The analysis was conducted by Janoshik Labs on January 21, 2026.

GHK-Cu is a copper-binding tripeptide researched for its role in collagen synthesis, wound healing, and skin regeneration. A purity level of 99.547% indicates high-grade synthesis with minimal impurities.

The full certificate of analysis is available for download on this page.