Source Standard
Knowledge Center
Testing3 min read

How independent testing works.

Random products, regular purchases, and public laboratory results.

Ongoing testing

Members are Verified from enrollment and enter random blind-purchase testing right away. Each vendor receives at least one independent test every year, with additional testing at our discretion.

Our selection, our purchase

We choose the product and timing at random. Vendors get no advance notice and cannot pick or substitute the sample. We buy through the regular website.

Independent analysis, public results

An independent laboratory tests identity and purity. We publish completed findings and reports on the vendor’s public profile. Every finalized, analytically valid result is published, pass or fail. A pass requires the correct peptide and 97.5% or higher purity; our testing standards set out corrective action and suspension.

Source Standard conducts a minimum of one independent, randomly selected product test per participating vendor each year, with additional testing conducted at our discretion.

Read the methodology