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

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◆ Batch ID · GHK04✓ Verified · Pass

GHK-Cu × Growth Guys - Lab Test, November 2025

Tested Wednesday, November 05, 2025 · submitted by @Frank 👑 Legend

HPLC Purity

99.56%

✓ Excellent

PeptideGHK-Cu

Brandgrowthguys.is

LabJanoshik Labs

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Test results

6 data points

Purity

99.56%

Endotoxins

Not tested

Stated qty

75 mg

Tested qty

74.24 mg

Qty match

99% of labeled · -1%

Batch ID

GHK04

Tested by

Janoshik LabsView profile →

◆ Quantity verification

75 mg→74.24 mg-1%

About this test

This independent lab analysis confirms GHK-Cu 75mg from Growth Guys at 99.565% purity. The test was conducted by Janoshik Labs on November 5, 2025, with a tested quantity of 74.24mg across multiple vials (74.24mg, 71.42mg, 71.33mg).

GHK-Cu is a copper peptide complex researched for its potential role in skin health, collagen synthesis, and tissue repair. A purity level of 99.565% indicates high-grade synthesis with minimal impurities.

The full certificate of analysis is available for verification at www.janoshik.com/verify/ using the unique key GMLCIY37P97S.