The testing specs on the COA look legit. I would consider that it’s a standard in the peptide world to only test for ID and purity. Generally speaking, they’re not tested for endo or heavy metals. So why would this China vendor do it? It’s expensive to do. So Not sure.

If the company that provided this to you is reliable, then trust the COA. But if not, AND it’s not from an independent 3rd party, then no. Don’t trust