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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

The blue vial color is expected

The dose should already be set on your pen and is typically listed on the label, under or near the word Wegovy. The pens are color-coded to make this easier

The drug is in a class known as GLP-1 agonists, which were created to treat type 2 diabetes

The exact maintenance dose can vary depending on your goals, how well you tolerate semaglutide GLP-1, and how your body responds over time