About Source Research
Source Research supplies peptides for laboratory research. Our published testing records include supplier-provided certificates of analysis (COAs) alongside independently commissioned laboratory reports.
Read the evidence by lot
Supplier COAs and independently commissioned reports are not interchangeable. Their methods, panels, samples and dates may differ; read the linked documents for the results they actually report. A missing origin COA is marked n/a, not inferred from another report.
The published records include a failed GHK-Cu result. A high purity result alone does not establish that a lot meets other tested limits.
Research use only
Products are for laboratory research only, not for human or animal consumption. We make no claims of safety or efficacy for any specific application.