PI-LAB-2026-0012

GHK-Cu — Independent Lab Report

GHK-Cu 50mg · Northstar Research Labs

Verified
Purity (HPLC) 98.3% Peptide and copper content both within specification.
Laboratory
Cornerstone Analytical
Test type
Purity + Content
Lot
NS-8804
Purchased
Tested
Published

Findings

Metric Label claim Measured Assessment
Purity (HPLC) ≥ 98% 98.3% Meets claim
Content (mass spec) 50.0 mg 49.1 mg Within 5% of label
Copper ratio (ICP-MS) 1:1 molar 0.97:1 Within tolerance

Methodology

RP-HPLC purity; ICP-MS copper quantification.

The sample was purchased anonymously through standard retail checkout and shipped to an unaffiliated address, then logged, photographed, and forwarded under chain-of-custody documentation to Cornerstone Analytical. See our full testing methodology.

Original laboratory report: PI-LAB-2026-0012-report.pdf (document delivery arrives with the production storage backend)

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