This independent HPLC with UV detection and mass spectrometry analysis confirms IGF-1 LR3 1mg from Peptide Supply Co at 99.16% purity. The analysis was conducted by Freedom Diagnostics Testing on March 15, 2026.
IGF-1 LR3 is a long-chain analog of insulin-like growth factor-1 researched for its potential benefits in muscle growth, recovery, and anti-aging support. A purity level of 99.16% demonstrates high-quality synthesis with minimal impurities.
The full certificate of analysis (COA: 2603120303) is available for download on this page.

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