BioMed research international, 2015(1), 648108.
What a COA Should Include Identity confirmation Mass spectrometry confirming the correct molecular weight (~504 Da for Dihexa) Confirmation that the tested compound matches CAS 1401708-83-5 / PNB-0408 Purity testing HPLC purity reputable listings claim ~98% or higher An HPLC chromatogram showing a single dominant peak, not a cluster of unresolved peaks Contamination testing Residual solvent analysis (especially relevant given DMSO-based transdermal forms) Heavy metals screening where the supplier provides it How to Verify a COA Is Legitimate Match the batch
In more severe cases or instances of poor absorption, regular injections might be recommended
Side effects reported across these peptides are mostly mild and localized: injection-site soreness or redness, occasional headache, fatigue, or lightheadedness show up repeatedly for BPC-157, TB-500, GHK-Cu, Thymosin Alpha-1, and CJC-1295/Ipamorelin, with PEG-MGF users also reporting flu-like symptoms and temporary water retention
van Campen CLM, Riepma K, Visser FC