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EGCG protects cells from oxidative damage and supports the body's antioxidant systems

What a COA (Certificate of Analysis) Should Include Identity Confirmation Mass spectrometry confirming correct molecular weight (~401 Da for GHK-Cu, ~340 Da for GHK alone) Explicit identification of the product as GHK-Cu (copper complex), not GHK alone Amino acid sequence verification matching Gly-His-Lys Purity Testing HPLC purity look for 98%+ purity HPLC chromatogram should show a single dominant peak Copper content analysis (atomic absorption or ICP-MS) confirming stoichiometric chelation Contamination Testing Endotoxin levels (bacterial contamination) Residual solvent analysis (acetonitrile, TFA) Heavy metals screening (other than the intentional copper) How to Verify a COA Is Legitimate Check the testing lab Reputable labs include Janoshik Analytical, MZ Biolabs, and Colmaric Analyticals

Additionally, oral supplements can cause mild stomach discomfort or prove less effective due to inadequate intestinal absorption

Athletes competing in sports with active anti-doping programs should note that Thymosin Beta-4 analogs appear on the WADA Prohibited List under S2

However, we do know that glutathione levels are affected by nutritional status, hormonal levels, and even stress levels