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

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◆ Batch ID · HK100-0126✓ Verified · Pass

GHK-Cu × Peak Peptides - Lab Test, February 2026

Tested Thursday, February 05, 2026 · submitted by @Frank 👑 Legend

HPLC Purity

99.76%

✓ Excellent

PeptideGHK-Cu

Brandpeak.you

LabJanoshik Labs

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Test results

6 data points

Purity

99.76%

Endotoxins

Not tested

Stated qty

100 mg

Tested qty

118.71 mg

Qty match

119% of labeled · +19%

Batch ID

HK100-0126

Tested by

Janoshik LabsView profile →

◆ Quantity verification

100 mg→118.71 mg+19%

About this test

This independent HPLC lab test confirms GHK-Cu 100mg from Peak Peptides at 99.761% purity. The analysis was conducted by Janoshik Labs on February 5, 2026.

GHK-Cu is a copper peptide complex researched for its potential role in skin regeneration, wound healing, and collagen synthesis. A purity level of 99.761% indicates high-grade synthesis with minimal contamination.

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