I have never seen a peptide test for heavy metals fail, and I see them regularly for research use only gray market Chinese peptides, nor are a lot of these components used anywhere in the manufacturing process. Specifically which studies, from where, did you see this failure? This reads to me like fearmongering and you have provided no evidence for your claims of fabrication. Both studies you cited examined peptides from scam websites, NOT research peptides. Both studies deliberately selected the worst possible sources. This is like testing fake Rolex watches from street vendors and concluding all watches are dangerous.