At Propertides, purity and quality are central to everything we do. Our peptides undergo independent testing to verify their identity, purity and composition, with analysis conducted by accredited laboratories in the Czech Republic and Canada.

For an additional layer of transparency, the Certificates of Analysis (COAs) for independently tested batches are published above. These reports provide a clear record of the testing performed and the results obtained, allowing you to review the analytical data behind our products for yourself.