§ CERTIFICATE OF ANALYSIS · THIRD-PARTY HPLC · NOV-2025● VERIFIED SUBMISSION · PUBLIC RECORD

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◆ Batch ID · AT00GK✓ Verified · Pass

GHK-Cu × XL Peptides - Lab Test, November 2025

Tested Tuesday, November 18, 2025 · submitted by @Frank 👑 Legend

HPLC Purity

99.70%

✓ Excellent

PeptideGHK-Cu

Brandxlpeptides.com

LabJanoshik Labs

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Test results

6 data points

Purity

99.70%

Endotoxins

Not tested

Stated qty

50 mg

Tested qty

47.02 mg

Qty match

94% of labeled · -6%

Batch ID

AT00GK

Tested by

Janoshik LabsView profile →

◆ Quantity verification

50 mg→47.02 mg-6%

About this test

This independent HPLC lab test confirms GHK-Cu 50mg from XL Peptides at 99.703% purity. The analysis was conducted by Janoshik Labs on November 18, 2025.

GHK-Cu is a copper peptide complex researched for its potential role in skin health, wound healing, and collagen synthesis. A purity level of 99.703% indicates minimal contamination and high-grade synthesis.

The full certificate of analysis is available for download and verification at www.janoshik.com/verify/ using verification key 6AM1BBHU23IT.