Source Standard
Knowledge Center
Accountability3 min read

How independent testing works.

One standard, independently purchased samples, and public findings.

Annual membership-year testing

Every participating vendor agrees to independent identity and purity testing within 12 months of joining, and annually thereafter. Source Standard randomly selects and purchases one product without advance notice through regular website orders. Membership does not mean a vendor has already been tested.

Independent website orders

Source Standard purchases a randomly selected product through a vendor’s regular website. No handpicked vendor-supplied vials or participant substitutions.

Publication and review

Completed findings include failed and inconclusive outcomes. Documented investigations may result in review, suspension, or removal. Confirmatory work and corrections are retained alongside earlier evidence.

One independent event within 12 months of joining, then one in each subsequent membership year.

Read the methodology